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Finding the Fourth Proportional to 131,737.16, 181,800.78 and 78,034.16

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Solution

The fourth proportional to 131,737.16, 181,800.78 and 78,034.16 is: 107,689.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,737.16 : 181,800.78 = 78,034.16 : x
  2. Step 2: Convert to fraction form
    131,737.16/181,800.78 = 78,034.16/x
  3. Step 3: Cross multiply
    131,737.16x = 181,800.78 × 78,034.16
  4. Step 4: Simplify right side
    131,737.16x = 14,186,671,154.64
  5. Step 5: Solve for x
    x = 14,186,671,154.64/131,737.16
  6. Step 6: Final answer
    x = 107,689.21

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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.