Home / 115,784.64-159,732-88,879.68

Finding the Fourth Proportional to 115,784.64, 159,732 and 88,879.68

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Solution

The fourth proportional to 115,784.64, 159,732 and 88,879.68 is: 122,614.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,784.64 : 159,732 = 88,879.68 : x
  2. Step 2: Convert to fraction form
    115,784.64/159,732 = 88,879.68/x
  3. Step 3: Cross multiply
    115,784.64x = 159,732 × 88,879.68
  4. Step 4: Simplify right side
    115,784.64x = 14,196,929,045.76
  5. Step 5: Solve for x
    x = 14,196,929,045.76/115,784.64
  6. Step 6: Final answer
    x = 122,614.96

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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.