Home / 105,122.90-145,068.42-57,375.86

Finding the Fourth Proportional to 105,122.90, 145,068.42 and 57,375.86

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Solution

The fourth proportional to 105,122.90, 145,068.42 and 57,375.86 is: 79,178.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,122.90 : 145,068.42 = 57,375.86 : x
  2. Step 2: Convert to fraction form
    105,122.90/145,068.42 = 57,375.86/x
  3. Step 3: Cross multiply
    105,122.90x = 145,068.42 × 57,375.86
  4. Step 4: Simplify right side
    105,122.90x = 8,323,425,356.34
  5. Step 5: Solve for x
    x = 8,323,425,356.34/105,122.90
  6. Step 6: Final answer
    x = 79,178.04

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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.