Home / 387,929.15-581,893.27-121,710.20

Finding the Fourth Proportional to 387,929.15, 581,893.27 and 121,710.20

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Solution

The fourth proportional to 387,929.15, 581,893.27 and 121,710.20 is: 182,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,929.15 : 581,893.27 = 121,710.20 : x
  2. Step 2: Convert to fraction form
    387,929.15/581,893.27 = 121,710.20/x
  3. Step 3: Cross multiply
    387,929.15x = 581,893.27 × 121,710.20
  4. Step 4: Simplify right side
    387,929.15x = 70,822,343,056.61
  5. Step 5: Solve for x
    x = 70,822,343,056.61/387,929.15
  6. Step 6: Final answer
    x = 182,565.15

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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.