Home / 78,734,865.80-118,102,298.70-70,798,680.20

Finding the Fourth Proportional to 78,734,865.80, 118,102,298.70 and 70,798,680.20

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Solution

The fourth proportional to 78,734,865.80, 118,102,298.70 and 70,798,680.20 is: 106,198,020.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734,865.80 : 118,102,298.70 = 70,798,680.20 : x
  2. Step 2: Convert to fraction form
    78,734,865.80/118,102,298.70 = 70,798,680.20/x
  3. Step 3: Cross multiply
    78,734,865.80x = 118,102,298.70 × 70,798,680.20
  4. Step 4: Simplify right side
    78,734,865.80x = 8,361,486,876,546,176
  5. Step 5: Solve for x
    x = 8,361,486,876,546,176/78,734,865.80
  6. Step 6: Final answer
    x = 106,198,020.30

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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.