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Finding the Fourth Proportional to 125,083.30, 172,641.01 and 114,995.76

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Solution

The fourth proportional to 125,083.30, 172,641.01 and 114,995.76 is: 158,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,083.30 : 172,641.01 = 114,995.76 : x
  2. Step 2: Convert to fraction form
    125,083.30/172,641.01 = 114,995.76/x
  3. Step 3: Cross multiply
    125,083.30x = 172,641.01 × 114,995.76
  4. Step 4: Simplify right side
    125,083.30x = 19,852,984,439.61
  5. Step 5: Solve for x
    x = 19,852,984,439.61/125,083.30
  6. Step 6: Final answer
    x = 158,718.11

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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.