Home / 121,214,573.40-181,715,571.90-72,711,724.80

Finding the Fourth Proportional to 121,214,573.40, 181,715,571.90 and 72,711,724.80

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Solution

The fourth proportional to 121,214,573.40, 181,715,571.90 and 72,711,724.80 is: 109,003,829.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,214,573.40 : 181,715,571.90 = 72,711,724.80 : x
  2. Step 2: Convert to fraction form
    121,214,573.40/181,715,571.90 = 72,711,724.80/x
  3. Step 3: Cross multiply
    121,214,573.40x = 181,715,571.90 × 72,711,724.80
  4. Step 4: Simplify right side
    121,214,573.40x = 13,212,852,655,867,414
  5. Step 5: Solve for x
    x = 13,212,852,655,867,414/121,214,573.40
  6. Step 6: Final answer
    x = 109,003,829.20

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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.