Home / 153,912,246.86-212,399,105.45-83,347,978.73

Finding the Fourth Proportional to 153,912,246.86, 212,399,105.45 and 83,347,978.73

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Solution

The fourth proportional to 153,912,246.86, 212,399,105.45 and 83,347,978.73 is: 115,020,321.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,912,246.86 : 212,399,105.45 = 83,347,978.73 : x
  2. Step 2: Convert to fraction form
    153,912,246.86/212,399,105.45 = 83,347,978.73/x
  3. Step 3: Cross multiply
    153,912,246.86x = 212,399,105.45 × 83,347,978.73
  4. Step 4: Simplify right side
    153,912,246.86x = 17,703,036,121,838,890
  5. Step 5: Solve for x
    x = 17,703,036,121,838,890/153,912,246.86
  6. Step 6: Final answer
    x = 115,020,321.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.