Home / 155,782.47-214,973.60-87,813.56

Finding the Fourth Proportional to 155,782.47, 214,973.60 and 87,813.56

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Solution

The fourth proportional to 155,782.47, 214,973.60 and 87,813.56 is: 121,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,782.47 : 214,973.60 = 87,813.56 : x
  2. Step 2: Convert to fraction form
    155,782.47/214,973.60 = 87,813.56/x
  3. Step 3: Cross multiply
    155,782.47x = 214,973.60 × 87,813.56
  4. Step 4: Simplify right side
    155,782.47x = 18,877,595,608.08
  5. Step 5: Solve for x
    x = 18,877,595,608.08/155,782.47
  6. Step 6: Final answer
    x = 121,179.20

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1.5x scale

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.