Home / 103,618.50-142,998.78-61,176.12

Finding the Fourth Proportional to 103,618.50, 142,998.78 and 61,176.12

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Solution

The fourth proportional to 103,618.50, 142,998.78 and 61,176.12 is: 84,426.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.50 : 142,998.78 = 61,176.12 : x
  2. Step 2: Convert to fraction form
    103,618.50/142,998.78 = 61,176.12/x
  3. Step 3: Cross multiply
    103,618.50x = 142,998.78 × 61,176.12
  4. Step 4: Simplify right side
    103,618.50x = 8,748,110,525.13
  5. Step 5: Solve for x
    x = 8,748,110,525.13/103,618.50
  6. Step 6: Final answer
    x = 84,426.15

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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.