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Finding the Fourth Proportional to 125,079.94, 172,627.08 and 74,088.70

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Solution

The fourth proportional to 125,079.94, 172,627.08 and 74,088.70 is: 102,252.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,079.94 : 172,627.08 = 74,088.70 : x
  2. Step 2: Convert to fraction form
    125,079.94/172,627.08 = 74,088.70/x
  3. Step 3: Cross multiply
    125,079.94x = 172,627.08 × 74,088.70
  4. Step 4: Simplify right side
    125,079.94x = 12,789,715,942.00
  5. Step 5: Solve for x
    x = 12,789,715,942.00/125,079.94
  6. Step 6: Final answer
    x = 102,252.34

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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.