Home / 82,801.20-124,201.80-79,172.40

Finding the Fourth Proportional to 82,801.20, 124,201.80 and 79,172.40

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Solution

The fourth proportional to 82,801.20, 124,201.80 and 79,172.40 is: 118,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,801.20 : 124,201.80 = 79,172.40 : x
  2. Step 2: Convert to fraction form
    82,801.20/124,201.80 = 79,172.40/x
  3. Step 3: Cross multiply
    82,801.20x = 124,201.80 × 79,172.40
  4. Step 4: Simplify right side
    82,801.20x = 9,833,354,590.32
  5. Step 5: Solve for x
    x = 9,833,354,590.32/82,801.20
  6. Step 6: Final answer
    x = 118,758.60

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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.