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Finding the Fourth Proportional to 124,438.40, 187,118.40 and 104,163.20

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Solution

The fourth proportional to 124,438.40, 187,118.40 and 104,163.20 is: 156,630.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,438.40 : 187,118.40 = 104,163.20 : x
  2. Step 2: Convert to fraction form
    124,438.40/187,118.40 = 104,163.20/x
  3. Step 3: Cross multiply
    124,438.40x = 187,118.40 × 104,163.20
  4. Step 4: Simplify right side
    124,438.40x = 19,490,851,322.88
  5. Step 5: Solve for x
    x = 19,490,851,322.88/124,438.40
  6. Step 6: Final answer
    x = 156,630.52

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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.