Home / 103,681.20-143,079.90-58,359.51

Finding the Fourth Proportional to 103,681.20, 143,079.90 and 58,359.51

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Solution

The fourth proportional to 103,681.20, 143,079.90 and 58,359.51 is: 80,536.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,681.20 : 143,079.90 = 58,359.51 : x
  2. Step 2: Convert to fraction form
    103,681.20/143,079.90 = 58,359.51/x
  3. Step 3: Cross multiply
    103,681.20x = 143,079.90 × 58,359.51
  4. Step 4: Simplify right side
    103,681.20x = 8,350,072,854.85
  5. Step 5: Solve for x
    x = 8,350,072,854.85/103,681.20
  6. Step 6: Final answer
    x = 80,536.04

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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.