Home / 115,023.68-158,728.76-64,712.96

Finding the Fourth Proportional to 115,023.68, 158,728.76 and 64,712.96

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Solution

The fourth proportional to 115,023.68, 158,728.76 and 64,712.96 is: 89,301.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,023.68 : 158,728.76 = 64,712.96 : x
  2. Step 2: Convert to fraction form
    115,023.68/158,728.76 = 64,712.96/x
  3. Step 3: Cross multiply
    115,023.68x = 158,728.76 × 64,712.96
  4. Step 4: Simplify right side
    115,023.68x = 10,271,807,896.73
  5. Step 5: Solve for x
    x = 10,271,807,896.73/115,023.68
  6. Step 6: Final answer
    x = 89,301.68

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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.