Home / 121,140.81-167,154.35-67,424.45

Finding the Fourth Proportional to 121,140.81, 167,154.35 and 67,424.45

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Solution

The fourth proportional to 121,140.81, 167,154.35 and 67,424.45 is: 93,034.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,140.81 : 167,154.35 = 67,424.45 : x
  2. Step 2: Convert to fraction form
    121,140.81/167,154.35 = 67,424.45/x
  3. Step 3: Cross multiply
    121,140.81x = 167,154.35 × 67,424.45
  4. Step 4: Simplify right side
    121,140.81x = 11,270,288,940.96
  5. Step 5: Solve for x
    x = 11,270,288,940.96/121,140.81
  6. Step 6: Final answer
    x = 93,034.62

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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.