Home / 103,780.47-143,198.02-58,448.74

Finding the Fourth Proportional to 103,780.47, 143,198.02 and 58,448.74

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Solution

The fourth proportional to 103,780.47, 143,198.02 and 58,448.74 is: 80,648.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,780.47 : 143,198.02 = 58,448.74 : x
  2. Step 2: Convert to fraction form
    103,780.47/143,198.02 = 58,448.74/x
  3. Step 3: Cross multiply
    103,780.47x = 143,198.02 × 58,448.74
  4. Step 4: Simplify right side
    103,780.47x = 8,369,744,061.41
  5. Step 5: Solve for x
    x = 8,369,744,061.41/103,780.47
  6. Step 6: Final answer
    x = 80,648.55

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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.