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Finding the Fourth Proportional to 98,643.62, 136,136.50 and 60,402.98

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Solution

The fourth proportional to 98,643.62, 136,136.50 and 60,402.98 is: 83,361.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,643.62 : 136,136.50 = 60,402.98 : x
  2. Step 2: Convert to fraction form
    98,643.62/136,136.50 = 60,402.98/x
  3. Step 3: Cross multiply
    98,643.62x = 136,136.50 × 60,402.98
  4. Step 4: Simplify right side
    98,643.62x = 8,223,050,286.77
  5. Step 5: Solve for x
    x = 8,223,050,286.77/98,643.62
  6. Step 6: Final answer
    x = 83,361.20

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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.