Home / 136,520.12-188,398.71-76,094.66

Finding the Fourth Proportional to 136,520.12, 188,398.71 and 76,094.66

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Solution

The fourth proportional to 136,520.12, 188,398.71 and 76,094.66 is: 105,011.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,520.12 : 188,398.71 = 76,094.66 : x
  2. Step 2: Convert to fraction form
    136,520.12/188,398.71 = 76,094.66/x
  3. Step 3: Cross multiply
    136,520.12x = 188,398.71 × 76,094.66
  4. Step 4: Simplify right side
    136,520.12x = 14,336,136,252.89
  5. Step 5: Solve for x
    x = 14,336,136,252.89/136,520.12
  6. Step 6: Final answer
    x = 105,011.16

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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.