Home / 131,686.49-181,727.15-74,337.89

Finding the Fourth Proportional to 131,686.49, 181,727.15 and 74,337.89

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Solution

The fourth proportional to 131,686.49, 181,727.15 and 74,337.89 is: 102,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,686.49 : 181,727.15 = 74,337.89 : x
  2. Step 2: Convert to fraction form
    131,686.49/181,727.15 = 74,337.89/x
  3. Step 3: Cross multiply
    131,686.49x = 181,727.15 × 74,337.89
  4. Step 4: Simplify right side
    131,686.49x = 13,509,211,606.39
  5. Step 5: Solve for x
    x = 13,509,211,606.39/131,686.49
  6. Step 6: Final answer
    x = 102,586.16

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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.