Home / 121,215,143.70-181,822,715.55-84,864,579.30

Finding the Fourth Proportional to 121,215,143.70, 181,822,715.55 and 84,864,579.30

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Solution

The fourth proportional to 121,215,143.70, 181,822,715.55 and 84,864,579.30 is: 127,296,868.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,215,143.70 : 181,822,715.55 = 84,864,579.30 : x
  2. Step 2: Convert to fraction form
    121,215,143.70/181,822,715.55 = 84,864,579.30/x
  3. Step 3: Cross multiply
    121,215,143.70x = 181,822,715.55 × 84,864,579.30
  4. Step 4: Simplify right side
    121,215,143.70x = 15,430,308,262,334,318
  5. Step 5: Solve for x
    x = 15,430,308,262,334,318/121,215,143.70
  6. Step 6: Final answer
    x = 127,296,868.95

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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.