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Finding the Fourth Proportional to 159,756.40, 220,463.85 and 88,136.59

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Solution

The fourth proportional to 159,756.40, 220,463.85 and 88,136.59 is: 121,628.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,756.40 : 220,463.85 = 88,136.59 : x
  2. Step 2: Convert to fraction form
    159,756.40/220,463.85 = 88,136.59/x
  3. Step 3: Cross multiply
    159,756.40x = 220,463.85 × 88,136.59
  4. Step 4: Simplify right side
    159,756.40x = 19,430,931,957.27
  5. Step 5: Solve for x
    x = 19,430,931,957.27/159,756.40
  6. Step 6: Final answer
    x = 121,628.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.