Home / 129,031,796.40-193,547,694.60-128,136,001.20

Finding the Fourth Proportional to 129,031,796.40, 193,547,694.60 and 128,136,001.20

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Solution

The fourth proportional to 129,031,796.40, 193,547,694.60 and 128,136,001.20 is: 192,204,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,031,796.40 : 193,547,694.60 = 128,136,001.20 : x
  2. Step 2: Convert to fraction form
    129,031,796.40/193,547,694.60 = 128,136,001.20/x
  3. Step 3: Cross multiply
    129,031,796.40x = 193,547,694.60 × 128,136,001.20
  4. Step 4: Simplify right side
    129,031,796.40x = 24,800,427,627,522,832
  5. Step 5: Solve for x
    x = 24,800,427,627,522,832/129,031,796.40
  6. Step 6: Final answer
    x = 192,204,001.80

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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.