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Finding the Fourth Proportional to 104,487.81, 155,630.70 and 102,300.81

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Solution

The fourth proportional to 104,487.81, 155,630.70 and 102,300.81 is: 152,373.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,487.81 : 155,630.70 = 102,300.81 : x
  2. Step 2: Convert to fraction form
    104,487.81/155,630.70 = 102,300.81/x
  3. Step 3: Cross multiply
    104,487.81x = 155,630.70 × 102,300.81
  4. Step 4: Simplify right side
    104,487.81x = 15,921,146,670.87
  5. Step 5: Solve for x
    x = 15,921,146,670.87/104,487.81
  6. Step 6: Final answer
    x = 152,373.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.