Home / 137,543.06-189,809.95-80,221.97

Finding the Fourth Proportional to 137,543.06, 189,809.95 and 80,221.97

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Solution

The fourth proportional to 137,543.06, 189,809.95 and 80,221.97 is: 110,706.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,543.06 : 189,809.95 = 80,221.97 : x
  2. Step 2: Convert to fraction form
    137,543.06/189,809.95 = 80,221.97/x
  3. Step 3: Cross multiply
    137,543.06x = 189,809.95 × 80,221.97
  4. Step 4: Simplify right side
    137,543.06x = 15,226,927,666.71
  5. Step 5: Solve for x
    x = 15,226,927,666.71/137,543.06
  6. Step 6: Final answer
    x = 110,706.62

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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.