Home / 121,817,329.38-167,921,939.34-74,687,148.54

Finding the Fourth Proportional to 121,817,329.38, 167,921,939.34 and 74,687,148.54

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Solution

The fourth proportional to 121,817,329.38, 167,921,939.34 and 74,687,148.54 is: 102,954,242.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,817,329.38 : 167,921,939.34 = 74,687,148.54 : x
  2. Step 2: Convert to fraction form
    121,817,329.38/167,921,939.34 = 74,687,148.54/x
  3. Step 3: Cross multiply
    121,817,329.38x = 167,921,939.34 × 74,687,148.54
  4. Step 4: Simplify right side
    121,817,329.38x = 12,541,610,826,611,450
  5. Step 5: Solve for x
    x = 12,541,610,826,611,450/121,817,329.38
  6. Step 6: Final answer
    x = 102,954,242.15

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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.