Home / 115,713.81-159,677.54-64,717.71

Finding the Fourth Proportional to 115,713.81, 159,677.54 and 64,717.71

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Solution

The fourth proportional to 115,713.81, 159,677.54 and 64,717.71 is: 89,306.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,713.81 : 159,677.54 = 64,717.71 : x
  2. Step 2: Convert to fraction form
    115,713.81/159,677.54 = 64,717.71/x
  3. Step 3: Cross multiply
    115,713.81x = 159,677.54 × 64,717.71
  4. Step 4: Simplify right side
    115,713.81x = 10,333,964,727.23
  5. Step 5: Solve for x
    x = 10,333,964,727.23/115,713.81
  6. Step 6: Final answer
    x = 89,306.24

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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.