Home / 103,387.91-142,729.51-69,574.19

Finding the Fourth Proportional to 103,387.91, 142,729.51 and 69,574.19

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Solution

The fourth proportional to 103,387.91, 142,729.51 and 69,574.19 is: 96,048.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,387.91 : 142,729.51 = 69,574.19 : x
  2. Step 2: Convert to fraction form
    103,387.91/142,729.51 = 69,574.19/x
  3. Step 3: Cross multiply
    103,387.91x = 142,729.51 × 69,574.19
  4. Step 4: Simplify right side
    103,387.91x = 9,930,289,159.76
  5. Step 5: Solve for x
    x = 9,930,289,159.76/103,387.91
  6. Step 6: Final answer
    x = 96,048.85

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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.