Home / 130,378,985.67-179,922,410.55-71,641,480.08

Finding the Fourth Proportional to 130,378,985.67, 179,922,410.55 and 71,641,480.08

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Solution

The fourth proportional to 130,378,985.67, 179,922,410.55 and 71,641,480.08 is: 98,864,918.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,378,985.67 : 179,922,410.55 = 71,641,480.08 : x
  2. Step 2: Convert to fraction form
    130,378,985.67/179,922,410.55 = 71,641,480.08/x
  3. Step 3: Cross multiply
    130,378,985.67x = 179,922,410.55 × 71,641,480.08
  4. Step 4: Simplify right side
    130,378,985.67x = 12,889,907,791,363,408
  5. Step 5: Solve for x
    x = 12,889,907,791,363,408/130,378,985.67
  6. Step 6: Final answer
    x = 98,864,918.49

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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.