Home / 97,718.90-146,891.55-90,785.30

Finding the Fourth Proportional to 97,718.90, 146,891.55 and 90,785.30

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Solution

The fourth proportional to 97,718.90, 146,891.55 and 90,785.30 is: 136,468.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,718.90 : 146,891.55 = 90,785.30 : x
  2. Step 2: Convert to fraction form
    97,718.90/146,891.55 = 90,785.30/x
  3. Step 3: Cross multiply
    97,718.90x = 146,891.55 × 90,785.30
  4. Step 4: Simplify right side
    97,718.90x = 13,335,593,434.22
  5. Step 5: Solve for x
    x = 13,335,593,434.22/97,718.90
  6. Step 6: Final answer
    x = 136,468.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.