Home / 92,438.20-138,657.30-88,809.40

Finding the Fourth Proportional to 92,438.20, 138,657.30 and 88,809.40

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Solution

The fourth proportional to 92,438.20, 138,657.30 and 88,809.40 is: 133,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,438.20 : 138,657.30 = 88,809.40 : x
  2. Step 2: Convert to fraction form
    92,438.20/138,657.30 = 88,809.40/x
  3. Step 3: Cross multiply
    92,438.20x = 138,657.30 × 88,809.40
  4. Step 4: Simplify right side
    92,438.20x = 12,314,071,618.62
  5. Step 5: Solve for x
    x = 12,314,071,618.62/92,438.20
  6. Step 6: Final answer
    x = 133,214.10

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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.