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Finding the Fourth Proportional to 98,141.80, 147,212.70 and 88,292.20

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Solution

The fourth proportional to 98,141.80, 147,212.70 and 88,292.20 is: 132,438.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,141.80 : 147,212.70 = 88,292.20 : x
  2. Step 2: Convert to fraction form
    98,141.80/147,212.70 = 88,292.20/x
  3. Step 3: Cross multiply
    98,141.80x = 147,212.70 × 88,292.20
  4. Step 4: Simplify right side
    98,141.80x = 12,997,733,150.94
  5. Step 5: Solve for x
    x = 12,997,733,150.94/98,141.80
  6. Step 6: Final answer
    x = 132,438.30

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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.