Home / 121,931,976.94-168,266,294.80-66,177,398.20

Finding the Fourth Proportional to 121,931,976.94, 168,266,294.80 and 66,177,398.20

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Solution

The fourth proportional to 121,931,976.94, 168,266,294.80 and 66,177,398.20 is: 91,324,899.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,931,976.94 : 168,266,294.80 = 66,177,398.20 : x
  2. Step 2: Convert to fraction form
    121,931,976.94/168,266,294.80 = 66,177,398.20/x
  3. Step 3: Cross multiply
    121,931,976.94x = 168,266,294.80 × 66,177,398.20
  4. Step 4: Simplify right side
    121,931,976.94x = 11,135,425,594,618,190
  5. Step 5: Solve for x
    x = 11,135,425,594,618,190/121,931,976.94
  6. Step 6: Final answer
    x = 91,324,899.95

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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.