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Finding the Fourth Proportional to 124,686.40, 187,490.40 and 104,411.20

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Solution

The fourth proportional to 124,686.40, 187,490.40 and 104,411.20 is: 157,002.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,686.40 : 187,490.40 = 104,411.20 : x
  2. Step 2: Convert to fraction form
    124,686.40/187,490.40 = 104,411.20/x
  3. Step 3: Cross multiply
    124,686.40x = 187,490.40 × 104,411.20
  4. Step 4: Simplify right side
    124,686.40x = 19,576,097,652.48
  5. Step 5: Solve for x
    x = 19,576,097,652.48/124,686.40
  6. Step 6: Final answer
    x = 157,002.67

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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.