Home / 121,208.20-181,812.30-83,883.40

Finding the Fourth Proportional to 121,208.20, 181,812.30 and 83,883.40

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Solution

The fourth proportional to 121,208.20, 181,812.30 and 83,883.40 is: 125,825.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,208.20 : 181,812.30 = 83,883.40 : x
  2. Step 2: Convert to fraction form
    121,208.20/181,812.30 = 83,883.40/x
  3. Step 3: Cross multiply
    121,208.20x = 181,812.30 × 83,883.40
  4. Step 4: Simplify right side
    121,208.20x = 15,251,033,885.82
  5. Step 5: Solve for x
    x = 15,251,033,885.82/121,208.20
  6. Step 6: Final answer
    x = 125,825.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.