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Finding the Fourth Proportional to 136,521, 188,392.92 and 76,098.24

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Solution

The fourth proportional to 136,521, 188,392.92 and 76,098.24 is: 105,012.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,521 : 188,392.92 = 76,098.24 : x
  2. Step 2: Convert to fraction form
    136,521/188,392.92 = 76,098.24/x
  3. Step 3: Cross multiply
    136,521x = 188,392.92 × 76,098.24
  4. Step 4: Simplify right side
    136,521x = 14,336,369,640.46
  5. Step 5: Solve for x
    x = 14,336,369,640.46/136,521
  6. Step 6: Final answer
    x = 105,012.19

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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.