Home / 121,455.92-167,547.87-81,223.22

Finding the Fourth Proportional to 121,455.92, 167,547.87 and 81,223.22

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Solution

The fourth proportional to 121,455.92, 167,547.87 and 81,223.22 is: 112,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,455.92 : 167,547.87 = 81,223.22 : x
  2. Step 2: Convert to fraction form
    121,455.92/167,547.87 = 81,223.22/x
  3. Step 3: Cross multiply
    121,455.92x = 167,547.87 × 81,223.22
  4. Step 4: Simplify right side
    121,455.92x = 13,608,776,667.80
  5. Step 5: Solve for x
    x = 13,608,776,667.80/121,455.92
  6. Step 6: Final answer
    x = 112,047.05

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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.