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Finding the Fourth Proportional to 98,950.20, 148,425.30 and 72,706.20

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Solution

The fourth proportional to 98,950.20, 148,425.30 and 72,706.20 is: 109,059.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,950.20 : 148,425.30 = 72,706.20 : x
  2. Step 2: Convert to fraction form
    98,950.20/148,425.30 = 72,706.20/x
  3. Step 3: Cross multiply
    98,950.20x = 148,425.30 × 72,706.20
  4. Step 4: Simplify right side
    98,950.20x = 10,791,439,546.86
  5. Step 5: Solve for x
    x = 10,791,439,546.86/98,950.20
  6. Step 6: Final answer
    x = 109,059.30

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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.