Home / 103,217.20-142,439.14-57,276.38

Finding the Fourth Proportional to 103,217.20, 142,439.14 and 57,276.38

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Solution

The fourth proportional to 103,217.20, 142,439.14 and 57,276.38 is: 79,041.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,217.20 : 142,439.14 = 57,276.38 : x
  2. Step 2: Convert to fraction form
    103,217.20/142,439.14 = 57,276.38/x
  3. Step 3: Cross multiply
    103,217.20x = 142,439.14 × 57,276.38
  4. Step 4: Simplify right side
    103,217.20x = 8,158,398,309.51
  5. Step 5: Solve for x
    x = 8,158,398,309.51/103,217.20
  6. Step 6: Final answer
    x = 79,041.07

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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.