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Finding the Fourth Proportional to 172,572.46, 238,083.82 and 107,130.59

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Solution

The fourth proportional to 172,572.46, 238,083.82 and 107,130.59 is: 147,799.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,572.46 : 238,083.82 = 107,130.59 : x
  2. Step 2: Convert to fraction form
    172,572.46/238,083.82 = 107,130.59/x
  3. Step 3: Cross multiply
    172,572.46x = 238,083.82 × 107,130.59
  4. Step 4: Simplify right side
    172,572.46x = 25,506,060,106.05
  5. Step 5: Solve for x
    x = 25,506,060,106.05/172,572.46
  6. Step 6: Final answer
    x = 147,799.13

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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.