Home / 78,820.10-118,230.15-74,212.10

Finding the Fourth Proportional to 78,820.10, 118,230.15 and 74,212.10

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Solution

The fourth proportional to 78,820.10, 118,230.15 and 74,212.10 is: 111,318.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,820.10 : 118,230.15 = 74,212.10 : x
  2. Step 2: Convert to fraction form
    78,820.10/118,230.15 = 74,212.10/x
  3. Step 3: Cross multiply
    78,820.10x = 118,230.15 × 74,212.10
  4. Step 4: Simplify right side
    78,820.10x = 8,774,107,714.82
  5. Step 5: Solve for x
    x = 8,774,107,714.82/78,820.10
  6. Step 6: Final answer
    x = 111,318.15

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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.