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Finding the Fourth Proportional to 131,756.70, 197,343.45 and 108,428.70

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Solution

The fourth proportional to 131,756.70, 197,343.45 and 108,428.70 is: 162,403.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,756.70 : 197,343.45 = 108,428.70 : x
  2. Step 2: Convert to fraction form
    131,756.70/197,343.45 = 108,428.70/x
  3. Step 3: Cross multiply
    131,756.70x = 197,343.45 × 108,428.70
  4. Step 4: Simplify right side
    131,756.70x = 21,397,693,737.02
  5. Step 5: Solve for x
    x = 21,397,693,737.02/131,756.70
  6. Step 6: Final answer
    x = 162,403.08

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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.