Home / 91,374.32-136,729.34-75,431.10

Finding the Fourth Proportional to 91,374.32, 136,729.34 and 75,431.10

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Solution

The fourth proportional to 91,374.32, 136,729.34 and 75,431.10 is: 112,872.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,374.32 : 136,729.34 = 75,431.10 : x
  2. Step 2: Convert to fraction form
    91,374.32/136,729.34 = 75,431.10/x
  3. Step 3: Cross multiply
    91,374.32x = 136,729.34 × 75,431.10
  4. Step 4: Simplify right side
    91,374.32x = 10,313,644,518.47
  5. Step 5: Solve for x
    x = 10,313,644,518.47/91,374.32
  6. Step 6: Final answer
    x = 112,872.46

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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.