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Finding the Fourth Proportional to 124,428.40, 187,103.40 and 104,153.20

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Solution

The fourth proportional to 124,428.40, 187,103.40 and 104,153.20 is: 156,615.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,428.40 : 187,103.40 = 104,153.20 : x
  2. Step 2: Convert to fraction form
    124,428.40/187,103.40 = 104,153.20/x
  3. Step 3: Cross multiply
    124,428.40x = 187,103.40 × 104,153.20
  4. Step 4: Simplify right side
    124,428.40x = 19,487,417,840.88
  5. Step 5: Solve for x
    x = 19,487,417,840.88/124,428.40
  6. Step 6: Final answer
    x = 156,615.51

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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.