Home / 115,641.76-159,612.30-75,285.25

Finding the Fourth Proportional to 115,641.76, 159,612.30 and 75,285.25

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Solution

The fourth proportional to 115,641.76, 159,612.30 and 75,285.25 is: 103,911.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,641.76 : 159,612.30 = 75,285.25 : x
  2. Step 2: Convert to fraction form
    115,641.76/159,612.30 = 75,285.25/x
  3. Step 3: Cross multiply
    115,641.76x = 159,612.30 × 75,285.25
  4. Step 4: Simplify right side
    115,641.76x = 12,016,451,908.58
  5. Step 5: Solve for x
    x = 12,016,451,908.58/115,641.76
  6. Step 6: Final answer
    x = 103,911.01

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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.