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Finding the Fourth Proportional to 173,978.28, 260,570.88 and 103,712.40

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Solution

The fourth proportional to 173,978.28, 260,570.88 and 103,712.40 is: 155,332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,978.28 : 260,570.88 = 103,712.40 : x
  2. Step 2: Convert to fraction form
    173,978.28/260,570.88 = 103,712.40/x
  3. Step 3: Cross multiply
    173,978.28x = 260,570.88 × 103,712.40
  4. Step 4: Simplify right side
    173,978.28x = 27,024,431,334.91
  5. Step 5: Solve for x
    x = 27,024,431,334.91/173,978.28
  6. Step 6: Final answer
    x = 155,332.21

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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.