Home / 91,278.40-136,726.60-73,412.50

Finding the Fourth Proportional to 91,278.40, 136,726.60 and 73,412.50

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Solution

The fourth proportional to 91,278.40, 136,726.60 and 73,412.50 is: 109,965.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,278.40 : 136,726.60 = 73,412.50 : x
  2. Step 2: Convert to fraction form
    91,278.40/136,726.60 = 73,412.50/x
  3. Step 3: Cross multiply
    91,278.40x = 136,726.60 × 73,412.50
  4. Step 4: Simplify right side
    91,278.40x = 10,037,441,522.50
  5. Step 5: Solve for x
    x = 10,037,441,522.50/91,278.40
  6. Step 6: Final answer
    x = 109,965.13

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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.