Home / 121,299.40-167,389.56-67,581.12

Finding the Fourth Proportional to 121,299.40, 167,389.56 and 67,581.12

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Solution

The fourth proportional to 121,299.40, 167,389.56 and 67,581.12 is: 93,259.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,299.40 : 167,389.56 = 67,581.12 : x
  2. Step 2: Convert to fraction form
    121,299.40/167,389.56 = 67,581.12/x
  3. Step 3: Cross multiply
    121,299.40x = 167,389.56 × 67,581.12
  4. Step 4: Simplify right side
    121,299.40x = 11,312,373,941.11
  5. Step 5: Solve for x
    x = 11,312,373,941.11/121,299.40
  6. Step 6: Final answer
    x = 93,259.93

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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.