Home / 87,123.16-120,185.64-56,926.16

Finding the Fourth Proportional to 87,123.16, 120,185.64 and 56,926.16

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Solution

The fourth proportional to 87,123.16, 120,185.64 and 56,926.16 is: 78,529.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,123.16 : 120,185.64 = 56,926.16 : x
  2. Step 2: Convert to fraction form
    87,123.16/120,185.64 = 56,926.16/x
  3. Step 3: Cross multiply
    87,123.16x = 120,185.64 × 56,926.16
  4. Step 4: Simplify right side
    87,123.16x = 6,841,706,972.34
  5. Step 5: Solve for x
    x = 6,841,706,972.34/87,123.16
  6. Step 6: Final answer
    x = 78,529.14

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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.