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Finding the Fourth Proportional to 125,124.27, 172,655.71 and 99,695.07

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Solution

The fourth proportional to 125,124.27, 172,655.71 and 99,695.07 is: 137,566.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,124.27 : 172,655.71 = 99,695.07 : x
  2. Step 2: Convert to fraction form
    125,124.27/172,655.71 = 99,695.07/x
  3. Step 3: Cross multiply
    125,124.27x = 172,655.71 × 99,695.07
  4. Step 4: Simplify right side
    125,124.27x = 17,212,922,845.11
  5. Step 5: Solve for x
    x = 17,212,922,845.11/125,124.27
  6. Step 6: Final answer
    x = 137,566.62

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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.