Home / 118,214.70-177,030.45-78,557.10

Finding the Fourth Proportional to 118,214.70, 177,030.45 and 78,557.10

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Solution

The fourth proportional to 118,214.70, 177,030.45 and 78,557.10 is: 117,641.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,214.70 : 177,030.45 = 78,557.10 : x
  2. Step 2: Convert to fraction form
    118,214.70/177,030.45 = 78,557.10/x
  3. Step 3: Cross multiply
    118,214.70x = 177,030.45 × 78,557.10
  4. Step 4: Simplify right side
    118,214.70x = 13,906,998,763.70
  5. Step 5: Solve for x
    x = 13,906,998,763.70/118,214.70
  6. Step 6: Final answer
    x = 117,641.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.