Home / 100,724.76-151,686.66-87,733.98

Finding the Fourth Proportional to 100,724.76, 151,686.66 and 87,733.98

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Solution

The fourth proportional to 100,724.76, 151,686.66 and 87,733.98 is: 132,123.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,724.76 : 151,686.66 = 87,733.98 : x
  2. Step 2: Convert to fraction form
    100,724.76/151,686.66 = 87,733.98/x
  3. Step 3: Cross multiply
    100,724.76x = 151,686.66 × 87,733.98
  4. Step 4: Simplify right side
    100,724.76x = 13,308,074,394.71
  5. Step 5: Solve for x
    x = 13,308,074,394.71/100,724.76
  6. Step 6: Final answer
    x = 132,123.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.