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Finding the Fourth Proportional to 90,701.90, 136,052.85 and 65,624.30

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Solution

The fourth proportional to 90,701.90, 136,052.85 and 65,624.30 is: 98,436.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,701.90 : 136,052.85 = 65,624.30 : x
  2. Step 2: Convert to fraction form
    90,701.90/136,052.85 = 65,624.30/x
  3. Step 3: Cross multiply
    90,701.90x = 136,052.85 × 65,624.30
  4. Step 4: Simplify right side
    90,701.90x = 8,928,373,044.26
  5. Step 5: Solve for x
    x = 8,928,373,044.26/90,701.90
  6. Step 6: Final answer
    x = 98,436.45

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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.