Home / 137,116.08-189,205.56-76,680.48

Finding the Fourth Proportional to 137,116.08, 189,205.56 and 76,680.48

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Solution

The fourth proportional to 137,116.08, 189,205.56 and 76,680.48 is: 105,810.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,116.08 : 189,205.56 = 76,680.48 : x
  2. Step 2: Convert to fraction form
    137,116.08/189,205.56 = 76,680.48/x
  3. Step 3: Cross multiply
    137,116.08x = 189,205.56 × 76,680.48
  4. Step 4: Simplify right side
    137,116.08x = 14,508,373,159.47
  5. Step 5: Solve for x
    x = 14,508,373,159.47/137,116.08
  6. Step 6: Final answer
    x = 105,810.88

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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.