Home / 78,817.10-118,225.65-74,209.10

Finding the Fourth Proportional to 78,817.10, 118,225.65 and 74,209.10

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Solution

The fourth proportional to 78,817.10, 118,225.65 and 74,209.10 is: 111,313.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,817.10 : 118,225.65 = 74,209.10 : x
  2. Step 2: Convert to fraction form
    78,817.10/118,225.65 = 74,209.10/x
  3. Step 3: Cross multiply
    78,817.10x = 118,225.65 × 74,209.10
  4. Step 4: Simplify right side
    78,817.10x = 8,773,419,083.42
  5. Step 5: Solve for x
    x = 8,773,419,083.42/78,817.10
  6. Step 6: Final answer
    x = 111,313.65

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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.