Home / 141,732.20-195,590.40-78,070

Finding the Fourth Proportional to 141,732.20, 195,590.40 and 78,070

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Solution

The fourth proportional to 141,732.20, 195,590.40 and 78,070 is: 107,736.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,732.20 : 195,590.40 = 78,070 : x
  2. Step 2: Convert to fraction form
    141,732.20/195,590.40 = 78,070/x
  3. Step 3: Cross multiply
    141,732.20x = 195,590.40 × 78,070
  4. Step 4: Simplify right side
    141,732.20x = 15,269,742,528
  5. Step 5: Solve for x
    x = 15,269,742,528/141,732.20
  6. Step 6: Final answer
    x = 107,736.58

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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.