Home / 108,876,905.80-163,315,358.70-78,265,904.20

Finding the Fourth Proportional to 108,876,905.80, 163,315,358.70 and 78,265,904.20

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Solution

The fourth proportional to 108,876,905.80, 163,315,358.70 and 78,265,904.20 is: 117,398,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,876,905.80 : 163,315,358.70 = 78,265,904.20 : x
  2. Step 2: Convert to fraction form
    108,876,905.80/163,315,358.70 = 78,265,904.20/x
  3. Step 3: Cross multiply
    108,876,905.80x = 163,315,358.70 × 78,265,904.20
  4. Step 4: Simplify right side
    108,876,905.80x = 12,782,024,218,402,836
  5. Step 5: Solve for x
    x = 12,782,024,218,402,836/108,876,905.80
  6. Step 6: Final answer
    x = 117,398,856.30

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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.