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Finding the Fourth Proportional to 125,347.71, 172,981.19 and 67,987.11

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Solution

The fourth proportional to 125,347.71, 172,981.19 and 67,987.11 is: 93,822.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,347.71 : 172,981.19 = 67,987.11 : x
  2. Step 2: Convert to fraction form
    125,347.71/172,981.19 = 67,987.11/x
  3. Step 3: Cross multiply
    125,347.71x = 172,981.19 × 67,987.11
  4. Step 4: Simplify right side
    125,347.71x = 11,760,490,852.53
  5. Step 5: Solve for x
    x = 11,760,490,852.53/125,347.71
  6. Step 6: Final answer
    x = 93,822.94

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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.