Home / 112,356,320.80-168,660,452.40-86,910,138.40

Finding the Fourth Proportional to 112,356,320.80, 168,660,452.40 and 86,910,138.40

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Solution

The fourth proportional to 112,356,320.80, 168,660,452.40 and 86,910,138.40 is: 130,462,649.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,356,320.80 : 168,660,452.40 = 86,910,138.40 : x
  2. Step 2: Convert to fraction form
    112,356,320.80/168,660,452.40 = 86,910,138.40/x
  3. Step 3: Cross multiply
    112,356,320.80x = 168,660,452.40 × 86,910,138.40
  4. Step 4: Simplify right side
    112,356,320.80x = 14,658,303,260,690,614
  5. Step 5: Solve for x
    x = 14,658,303,260,690,614/112,356,320.80
  6. Step 6: Final answer
    x = 130,462,649.15

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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.