Home / 115,565.56-159,479.68-64,578.42

Finding the Fourth Proportional to 115,565.56, 159,479.68 and 64,578.42

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Solution

The fourth proportional to 115,565.56, 159,479.68 and 64,578.42 is: 89,117.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,565.56 : 159,479.68 = 64,578.42 : x
  2. Step 2: Convert to fraction form
    115,565.56/159,479.68 = 64,578.42/x
  3. Step 3: Cross multiply
    115,565.56x = 159,479.68 × 64,578.42
  4. Step 4: Simplify right side
    115,565.56x = 10,298,944,959.11
  5. Step 5: Solve for x
    x = 10,298,944,959.11/115,565.56
  6. Step 6: Final answer
    x = 89,117.77

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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.