Home / 115,425.06-159,352.82-87,985.71

Finding the Fourth Proportional to 115,425.06, 159,352.82 and 87,985.71

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Solution

The fourth proportional to 115,425.06, 159,352.82 and 87,985.71 is: 121,470.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,425.06 : 159,352.82 = 87,985.71 : x
  2. Step 2: Convert to fraction form
    115,425.06/159,352.82 = 87,985.71/x
  3. Step 3: Cross multiply
    115,425.06x = 159,352.82 × 87,985.71
  4. Step 4: Simplify right side
    115,425.06x = 14,020,771,008.20
  5. Step 5: Solve for x
    x = 14,020,771,008.20/115,425.06
  6. Step 6: Final answer
    x = 121,470.77

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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.