Home / 90,815.18-125,167.48-85,566.38

Finding the Fourth Proportional to 90,815.18, 125,167.48 and 85,566.38

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Solution

The fourth proportional to 90,815.18, 125,167.48 and 85,566.38 is: 117,933.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,815.18 : 125,167.48 = 85,566.38 : x
  2. Step 2: Convert to fraction form
    90,815.18/125,167.48 = 85,566.38/x
  3. Step 3: Cross multiply
    90,815.18x = 125,167.48 × 85,566.38
  4. Step 4: Simplify right side
    90,815.18x = 10,710,127,317.57
  5. Step 5: Solve for x
    x = 10,710,127,317.57/90,815.18
  6. Step 6: Final answer
    x = 117,933.23

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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.