Home / 115,709.17-159,693.45-64,724.73

Finding the Fourth Proportional to 115,709.17, 159,693.45 and 64,724.73

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Solution

The fourth proportional to 115,709.17, 159,693.45 and 64,724.73 is: 89,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,709.17 : 159,693.45 = 64,724.73 : x
  2. Step 2: Convert to fraction form
    115,709.17/159,693.45 = 64,724.73/x
  3. Step 3: Cross multiply
    115,709.17x = 159,693.45 × 64,724.73
  4. Step 4: Simplify right side
    115,709.17x = 10,336,115,434.02
  5. Step 5: Solve for x
    x = 10,336,115,434.02/115,709.17
  6. Step 6: Final answer
    x = 89,328.40

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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.