Home / 91,253.64-136,767.45-51,690.81

Finding the Fourth Proportional to 91,253.64, 136,767.45 and 51,690.81

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Solution

The fourth proportional to 91,253.64, 136,767.45 and 51,690.81 is: 77,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,253.64 : 136,767.45 = 51,690.81 : x
  2. Step 2: Convert to fraction form
    91,253.64/136,767.45 = 51,690.81/x
  3. Step 3: Cross multiply
    91,253.64x = 136,767.45 × 51,690.81
  4. Step 4: Simplify right side
    91,253.64x = 7,069,620,272.13
  5. Step 5: Solve for x
    x = 7,069,620,272.13/91,253.64
  6. Step 6: Final answer
    x = 77,472.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.