Home / 81,161.60-121,742.33-53,258.18

Finding the Fourth Proportional to 81,161.60, 121,742.33 and 53,258.18

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Solution

The fourth proportional to 81,161.60, 121,742.33 and 53,258.18 is: 79,887.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,161.60 : 121,742.33 = 53,258.18 : x
  2. Step 2: Convert to fraction form
    81,161.60/121,742.33 = 53,258.18/x
  3. Step 3: Cross multiply
    81,161.60x = 121,742.33 × 53,258.18
  4. Step 4: Simplify right side
    81,161.60x = 6,483,774,049.76
  5. Step 5: Solve for x
    x = 6,483,774,049.76/81,161.60
  6. Step 6: Final answer
    x = 79,887.22

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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.