Home / 103,683.20-143,081.28-58,357.76

Finding the Fourth Proportional to 103,683.20, 143,081.28 and 58,357.76

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Solution

The fourth proportional to 103,683.20, 143,081.28 and 58,357.76 is: 80,532.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,683.20 : 143,081.28 = 58,357.76 : x
  2. Step 2: Convert to fraction form
    103,683.20/143,081.28 = 58,357.76/x
  3. Step 3: Cross multiply
    103,683.20x = 143,081.28 × 58,357.76
  4. Step 4: Simplify right side
    103,683.20x = 8,349,902,998.73
  5. Step 5: Solve for x
    x = 8,349,902,998.73/103,683.20
  6. Step 6: Final answer
    x = 80,532.84

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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.