Home / 103,001.28-142,145.82-57,678.86

Finding the Fourth Proportional to 103,001.28, 142,145.82 and 57,678.86

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Solution

The fourth proportional to 103,001.28, 142,145.82 and 57,678.86 is: 79,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,001.28 : 142,145.82 = 57,678.86 : x
  2. Step 2: Convert to fraction form
    103,001.28/142,145.82 = 57,678.86/x
  3. Step 3: Cross multiply
    103,001.28x = 142,145.82 × 57,678.86
  4. Step 4: Simplify right side
    103,001.28x = 8,198,808,990.43
  5. Step 5: Solve for x
    x = 8,198,808,990.43/103,001.28
  6. Step 6: Final answer
    x = 79,599.10

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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.