Home / 103,718.30-143,132.27-58,387.46

Finding the Fourth Proportional to 103,718.30, 143,132.27 and 58,387.46

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Solution

The fourth proportional to 103,718.30, 143,132.27 and 58,387.46 is: 80,575.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,718.30 : 143,132.27 = 58,387.46 : x
  2. Step 2: Convert to fraction form
    103,718.30/143,132.27 = 58,387.46/x
  3. Step 3: Cross multiply
    103,718.30x = 143,132.27 × 58,387.46
  4. Step 4: Simplify right side
    103,718.30x = 8,357,128,681.74
  5. Step 5: Solve for x
    x = 8,357,128,681.74/103,718.30
  6. Step 6: Final answer
    x = 80,575.26

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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.