Home / 115,736.19-159,715.14-64,748.72

Finding the Fourth Proportional to 115,736.19, 159,715.14 and 64,748.72

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Solution

The fourth proportional to 115,736.19, 159,715.14 and 64,748.72 is: 89,352.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,736.19 : 159,715.14 = 64,748.72 : x
  2. Step 2: Convert to fraction form
    115,736.19/159,715.14 = 64,748.72/x
  3. Step 3: Cross multiply
    115,736.19x = 159,715.14 × 64,748.72
  4. Step 4: Simplify right side
    115,736.19x = 10,341,350,501.91
  5. Step 5: Solve for x
    x = 10,341,350,501.91/115,736.19
  6. Step 6: Final answer
    x = 89,352.78

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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.