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Finding the Fourth Proportional to 132,347.70, 198,521.55 and 70,139.70

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Solution

The fourth proportional to 132,347.70, 198,521.55 and 70,139.70 is: 105,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,347.70 : 198,521.55 = 70,139.70 : x
  2. Step 2: Convert to fraction form
    132,347.70/198,521.55 = 70,139.70/x
  3. Step 3: Cross multiply
    132,347.70x = 198,521.55 × 70,139.70
  4. Step 4: Simplify right side
    132,347.70x = 13,924,241,960.54
  5. Step 5: Solve for x
    x = 13,924,241,960.54/132,347.70
  6. Step 6: Final answer
    x = 105,209.55

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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.