Home / 102,645.42-141,642.60-57,319.86

Finding the Fourth Proportional to 102,645.42, 141,642.60 and 57,319.86

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Solution

The fourth proportional to 102,645.42, 141,642.60 and 57,319.86 is: 79,096.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,645.42 : 141,642.60 = 57,319.86 : x
  2. Step 2: Convert to fraction form
    102,645.42/141,642.60 = 57,319.86/x
  3. Step 3: Cross multiply
    102,645.42x = 141,642.60 × 57,319.86
  4. Step 4: Simplify right side
    102,645.42x = 8,118,934,002.04
  5. Step 5: Solve for x
    x = 8,118,934,002.04/102,645.42
  6. Step 6: Final answer
    x = 79,096.89

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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.