Home / 112,338,700.80-168,508,051.20-91,931,366.40

Finding the Fourth Proportional to 112,338,700.80, 168,508,051.20 and 91,931,366.40

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Solution

The fourth proportional to 112,338,700.80, 168,508,051.20 and 91,931,366.40 is: 137,897,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,338,700.80 : 168,508,051.20 = 91,931,366.40 : x
  2. Step 2: Convert to fraction form
    112,338,700.80/168,508,051.20 = 91,931,366.40/x
  3. Step 3: Cross multiply
    112,338,700.80x = 168,508,051.20 × 91,931,366.40
  4. Step 4: Simplify right side
    112,338,700.80x = 15,491,175,396,217,160
  5. Step 5: Solve for x
    x = 15,491,175,396,217,160/112,338,700.80
  6. Step 6: Final answer
    x = 137,897,049.60

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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.