Home / 92,214.30-138,321.45-90,902.10

Finding the Fourth Proportional to 92,214.30, 138,321.45 and 90,902.10

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Solution

The fourth proportional to 92,214.30, 138,321.45 and 90,902.10 is: 136,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,214.30 : 138,321.45 = 90,902.10 : x
  2. Step 2: Convert to fraction form
    92,214.30/138,321.45 = 90,902.10/x
  3. Step 3: Cross multiply
    92,214.30x = 138,321.45 × 90,902.10
  4. Step 4: Simplify right side
    92,214.30x = 12,573,710,280.05
  5. Step 5: Solve for x
    x = 12,573,710,280.05/92,214.30
  6. Step 6: Final answer
    x = 136,353.15

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1.5x scale

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.