Home / 78,733.20-118,099.80-71,844.15

Finding the Fourth Proportional to 78,733.20, 118,099.80 and 71,844.15

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Solution

The fourth proportional to 78,733.20, 118,099.80 and 71,844.15 is: 107,766.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733.20 : 118,099.80 = 71,844.15 : x
  2. Step 2: Convert to fraction form
    78,733.20/118,099.80 = 71,844.15/x
  3. Step 3: Cross multiply
    78,733.20x = 118,099.80 × 71,844.15
  4. Step 4: Simplify right side
    78,733.20x = 8,484,779,746.17
  5. Step 5: Solve for x
    x = 8,484,779,746.17/78,733.20
  6. Step 6: Final answer
    x = 107,766.23

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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.