Home / 90,288,002.80-135,432,004.20-88,496,412.40

Finding the Fourth Proportional to 90,288,002.80, 135,432,004.20 and 88,496,412.40

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Solution

The fourth proportional to 90,288,002.80, 135,432,004.20 and 88,496,412.40 is: 132,744,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,288,002.80 : 135,432,004.20 = 88,496,412.40 : x
  2. Step 2: Convert to fraction form
    90,288,002.80/135,432,004.20 = 88,496,412.40/x
  3. Step 3: Cross multiply
    90,288,002.80x = 135,432,004.20 × 88,496,412.40
  4. Step 4: Simplify right side
    90,288,002.80x = 11,985,246,495,841,732
  5. Step 5: Solve for x
    x = 11,985,246,495,841,732/90,288,002.80
  6. Step 6: Final answer
    x = 132,744,618.60

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Similar ratio
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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.