Home / 115,697.72-159,659.66-64,710.55

Finding the Fourth Proportional to 115,697.72, 159,659.66 and 64,710.55

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Solution

The fourth proportional to 115,697.72, 159,659.66 and 64,710.55 is: 89,298.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,697.72 : 159,659.66 = 64,710.55 : x
  2. Step 2: Convert to fraction form
    115,697.72/159,659.66 = 64,710.55/x
  3. Step 3: Cross multiply
    115,697.72x = 159,659.66 × 64,710.55
  4. Step 4: Simplify right side
    115,697.72x = 10,331,663,510.68
  5. Step 5: Solve for x
    x = 10,331,663,510.68/115,697.72
  6. Step 6: Final answer
    x = 89,298.77

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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.