Home / 78,397.40-117,596.10-73,148.60

Finding the Fourth Proportional to 78,397.40, 117,596.10 and 73,148.60

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Solution

The fourth proportional to 78,397.40, 117,596.10 and 73,148.60 is: 109,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,397.40 : 117,596.10 = 73,148.60 : x
  2. Step 2: Convert to fraction form
    78,397.40/117,596.10 = 73,148.60/x
  3. Step 3: Cross multiply
    78,397.40x = 117,596.10 × 73,148.60
  4. Step 4: Simplify right side
    78,397.40x = 8,601,990,080.46
  5. Step 5: Solve for x
    x = 8,601,990,080.46/78,397.40
  6. Step 6: Final answer
    x = 109,722.90

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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.