Home / 121,979,270.58-168,333,800.85-66,974,645.94

Finding the Fourth Proportional to 121,979,270.58, 168,333,800.85 and 66,974,645.94

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Solution

The fourth proportional to 121,979,270.58, 168,333,800.85 and 66,974,645.94 is: 92,426,333.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,979,270.58 : 168,333,800.85 = 66,974,645.94 : x
  2. Step 2: Convert to fraction form
    121,979,270.58/168,333,800.85 = 66,974,645.94/x
  3. Step 3: Cross multiply
    121,979,270.58x = 168,333,800.85 × 66,974,645.94
  4. Step 4: Simplify right side
    121,979,270.58x = 11,274,096,711,663,220
  5. Step 5: Solve for x
    x = 11,274,096,711,663,220/121,979,270.58
  6. Step 6: Final answer
    x = 92,426,333.25

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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.