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Finding the Fourth Proportional to 125,070.06, 172,597.78 and 74,085.69

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Solution

The fourth proportional to 125,070.06, 172,597.78 and 74,085.69 is: 102,238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,070.06 : 172,597.78 = 74,085.69 : x
  2. Step 2: Convert to fraction form
    125,070.06/172,597.78 = 74,085.69/x
  3. Step 3: Cross multiply
    125,070.06x = 172,597.78 × 74,085.69
  4. Step 4: Simplify right side
    125,070.06x = 12,787,025,623.77
  5. Step 5: Solve for x
    x = 12,787,025,623.77/125,070.06
  6. Step 6: Final answer
    x = 102,238.90

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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.