Home / 112,617,286.20-168,925,929.30-78,179,909.40

Finding the Fourth Proportional to 112,617,286.20, 168,925,929.30 and 78,179,909.40

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Solution

The fourth proportional to 112,617,286.20, 168,925,929.30 and 78,179,909.40 is: 117,269,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,617,286.20 : 168,925,929.30 = 78,179,909.40 : x
  2. Step 2: Convert to fraction form
    112,617,286.20/168,925,929.30 = 78,179,909.40/x
  3. Step 3: Cross multiply
    112,617,286.20x = 168,925,929.30 × 78,179,909.40
  4. Step 4: Simplify right side
    112,617,286.20x = 13,206,613,847,984,808
  5. Step 5: Solve for x
    x = 13,206,613,847,984,808/112,617,286.20
  6. Step 6: Final answer
    x = 117,269,864.10

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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.