Home / 121,880,236.05-168,162,189.75-72,279,371.34

Finding the Fourth Proportional to 121,880,236.05, 168,162,189.75 and 72,279,371.34

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Solution

The fourth proportional to 121,880,236.05, 168,162,189.75 and 72,279,371.34 is: 99,726,237.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,880,236.05 : 168,162,189.75 = 72,279,371.34 : x
  2. Step 2: Convert to fraction form
    121,880,236.05/168,162,189.75 = 72,279,371.34/x
  3. Step 3: Cross multiply
    121,880,236.05x = 168,162,189.75 × 72,279,371.34
  4. Step 4: Simplify right side
    121,880,236.05x = 12,154,657,358,287,792
  5. Step 5: Solve for x
    x = 12,154,657,358,287,792/121,880,236.05
  6. Step 6: Final answer
    x = 99,726,237.43

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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.