Home / 155,845,483,281.87-215,089,345,927.89-87,261,316,238.64

Finding the Fourth Proportional to 155,845,483,281.87, 215,089,345,927.89 and 87,261,316,238.64

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Solution

The fourth proportional to 155,845,483,281.87, 215,089,345,927.89 and 87,261,316,238.64 is: 120,433,258,887.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,845,483,281.87 : 215,089,345,927.89 = 87,261,316,238.64 : x
  2. Step 2: Convert to fraction form
    155,845,483,281.87/215,089,345,927.89 = 87,261,316,238.64/x
  3. Step 3: Cross multiply
    155,845,483,281.87x = 215,089,345,927.89 × 87,261,316,238.64
  4. Step 4: Simplify right side
    155,845,483,281.87x = 18,768,979,434,575,845,392,384
  5. Step 5: Solve for x
    x = 18,768,979,434,575,845,392,384/155,845,483,281.87
  6. Step 6: Final answer
    x = 120,433,258,887.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.