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Finding the Fourth Proportional to 102,586.40, 153,649.20 and 102,586.40

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Solution

The fourth proportional to 102,586.40, 153,649.20 and 102,586.40 is: 153,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,586.40 : 153,649.20 = 102,586.40 : x
  2. Step 2: Convert to fraction form
    102,586.40/153,649.20 = 102,586.40/x
  3. Step 3: Cross multiply
    102,586.40x = 153,649.20 × 102,586.40
  4. Step 4: Simplify right side
    102,586.40x = 15,762,318,290.88
  5. Step 5: Solve for x
    x = 15,762,318,290.88/102,586.40
  6. Step 6: Final answer
    x = 153,649.20

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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.