Home / 115,731.20-159,723.76-64,746.76

Finding the Fourth Proportional to 115,731.20, 159,723.76 and 64,746.76

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Solution

The fourth proportional to 115,731.20, 159,723.76 and 64,746.76 is: 89,358.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,731.20 : 159,723.76 = 64,746.76 : x
  2. Step 2: Convert to fraction form
    115,731.20/159,723.76 = 64,746.76/x
  3. Step 3: Cross multiply
    115,731.20x = 159,723.76 × 64,746.76
  4. Step 4: Simplify right side
    115,731.20x = 10,341,595,955.02
  5. Step 5: Solve for x
    x = 10,341,595,955.02/115,731.20
  6. Step 6: Final answer
    x = 89,358.76

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1.5x scale

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.