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Finding the Fourth Proportional to 98,496.90, 147,526.65 and 81,000.90

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Solution

The fourth proportional to 98,496.90, 147,526.65 and 81,000.90 is: 121,321.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,496.90 : 147,526.65 = 81,000.90 : x
  2. Step 2: Convert to fraction form
    98,496.90/147,526.65 = 81,000.90/x
  3. Step 3: Cross multiply
    98,496.90x = 147,526.65 × 81,000.90
  4. Step 4: Simplify right side
    98,496.90x = 11,949,791,423.99
  5. Step 5: Solve for x
    x = 11,949,791,423.99/98,496.90
  6. Step 6: Final answer
    x = 121,321.50

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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.