Home / 78,868.20-118,302.30-77,572.20

Finding the Fourth Proportional to 78,868.20, 118,302.30 and 77,572.20

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Solution

The fourth proportional to 78,868.20, 118,302.30 and 77,572.20 is: 116,358.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,868.20 : 118,302.30 = 77,572.20 : x
  2. Step 2: Convert to fraction form
    78,868.20/118,302.30 = 77,572.20/x
  3. Step 3: Cross multiply
    78,868.20x = 118,302.30 × 77,572.20
  4. Step 4: Simplify right side
    78,868.20x = 9,176,969,676.06
  5. Step 5: Solve for x
    x = 9,176,969,676.06/78,868.20
  6. Step 6: Final answer
    x = 116,358.30

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1.5x scale

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.