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Finding the Fourth Proportional to 125,423.54, 173,078.95 and 71,712.07

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Solution

The fourth proportional to 125,423.54, 173,078.95 and 71,712.07 is: 98,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,423.54 : 173,078.95 = 71,712.07 : x
  2. Step 2: Convert to fraction form
    125,423.54/173,078.95 = 71,712.07/x
  3. Step 3: Cross multiply
    125,423.54x = 173,078.95 × 71,712.07
  4. Step 4: Simplify right side
    125,423.54x = 12,411,850,232.28
  5. Step 5: Solve for x
    x = 12,411,850,232.28/125,423.54
  6. Step 6: Final answer
    x = 98,959.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.