Home / 387,948.15-581,922.90-121,729.10

Finding the Fourth Proportional to 387,948.15, 581,922.90 and 121,729.10

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Solution

The fourth proportional to 387,948.15, 581,922.90 and 121,729.10 is: 182,593.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,948.15 : 581,922.90 = 121,729.10 : x
  2. Step 2: Convert to fraction form
    387,948.15/581,922.90 = 121,729.10/x
  3. Step 3: Cross multiply
    387,948.15x = 581,922.90 × 121,729.10
  4. Step 4: Simplify right side
    387,948.15x = 70,836,947,976.78
  5. Step 5: Solve for x
    x = 70,836,947,976.78/387,948.15
  6. Step 6: Final answer
    x = 182,593.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.