Home / 91,372.32-136,726.34-75,429.10

Finding the Fourth Proportional to 91,372.32, 136,726.34 and 75,429.10

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Solution

The fourth proportional to 91,372.32, 136,726.34 and 75,429.10 is: 112,869.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,372.32 : 136,726.34 = 75,429.10 : x
  2. Step 2: Convert to fraction form
    91,372.32/136,726.34 = 75,429.10/x
  3. Step 3: Cross multiply
    91,372.32x = 136,726.34 × 75,429.10
  4. Step 4: Simplify right side
    91,372.32x = 10,313,144,772.49
  5. Step 5: Solve for x
    x = 10,313,144,772.49/91,372.32
  6. Step 6: Final answer
    x = 112,869.46

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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.