Home / 98,860.50-136,434.78-61,142.04

Finding the Fourth Proportional to 98,860.50, 136,434.78 and 61,142.04

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Solution

The fourth proportional to 98,860.50, 136,434.78 and 61,142.04 is: 84,380.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,860.50 : 136,434.78 = 61,142.04 : x
  2. Step 2: Convert to fraction form
    98,860.50/136,434.78 = 61,142.04/x
  3. Step 3: Cross multiply
    98,860.50x = 136,434.78 × 61,142.04
  4. Step 4: Simplify right side
    98,860.50x = 8,341,900,776.15
  5. Step 5: Solve for x
    x = 8,341,900,776.15/98,860.50
  6. Step 6: Final answer
    x = 84,380.52

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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.