Home / 156,749,165.82-216,287,701.92-87,125,080.40

Finding the Fourth Proportional to 156,749,165.82, 216,287,701.92 and 87,125,080.40

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Solution

The fourth proportional to 156,749,165.82, 216,287,701.92 and 87,125,080.40 is: 120,218,077.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749,165.82 : 216,287,701.92 = 87,125,080.40 : x
  2. Step 2: Convert to fraction form
    156,749,165.82/216,287,701.92 = 87,125,080.40/x
  3. Step 3: Cross multiply
    156,749,165.82x = 216,287,701.92 × 87,125,080.40
  4. Step 4: Simplify right side
    156,749,165.82x = 18,844,083,419,311,236
  5. Step 5: Solve for x
    x = 18,844,083,419,311,236/156,749,165.82
  6. Step 6: Final answer
    x = 120,218,077.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.