Home / 121,215,204.70-181,822,807.05-84,864,640.30

Finding the Fourth Proportional to 121,215,204.70, 181,822,807.05 and 84,864,640.30

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Solution

The fourth proportional to 121,215,204.70, 181,822,807.05 and 84,864,640.30 is: 127,296,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,215,204.70 : 181,822,807.05 = 84,864,640.30 : x
  2. Step 2: Convert to fraction form
    121,215,204.70/181,822,807.05 = 84,864,640.30/x
  3. Step 3: Cross multiply
    121,215,204.70x = 181,822,807.05 × 84,864,640.30
  4. Step 4: Simplify right side
    121,215,204.70x = 15,430,327,118,634,554
  5. Step 5: Solve for x
    x = 15,430,327,118,634,554/121,215,204.70
  6. Step 6: Final answer
    x = 127,296,960.45

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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.