Home / 121,378.04-167,501.72-67,661.90

Finding the Fourth Proportional to 121,378.04, 167,501.72 and 67,661.90

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Solution

The fourth proportional to 121,378.04, 167,501.72 and 67,661.90 is: 93,373.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,378.04 : 167,501.72 = 67,661.90 : x
  2. Step 2: Convert to fraction form
    121,378.04/167,501.72 = 67,661.90/x
  3. Step 3: Cross multiply
    121,378.04x = 167,501.72 × 67,661.90
  4. Step 4: Simplify right side
    121,378.04x = 11,333,483,452.65
  5. Step 5: Solve for x
    x = 11,333,483,452.65/121,378.04
  6. Step 6: Final answer
    x = 93,373.43

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1.5x scale

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.