Home / 121,931,977.50-168,266,295.58-66,177,398.76

Finding the Fourth Proportional to 121,931,977.50, 168,266,295.58 and 66,177,398.76

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Solution

The fourth proportional to 121,931,977.50, 168,266,295.58 and 66,177,398.76 is: 91,324,900.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,931,977.50 : 168,266,295.58 = 66,177,398.76 : x
  2. Step 2: Convert to fraction form
    121,931,977.50/168,266,295.58 = 66,177,398.76/x
  3. Step 3: Cross multiply
    121,931,977.50x = 168,266,295.58 × 66,177,398.76
  4. Step 4: Simplify right side
    121,931,977.50x = 11,135,425,740,465,686
  5. Step 5: Solve for x
    x = 11,135,425,740,465,686/121,931,977.50
  6. Step 6: Final answer
    x = 91,324,900.73

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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.