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Finding the Fourth Proportional to 121,391.36, 182,008.32 and 83,846.40

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Solution

The fourth proportional to 121,391.36, 182,008.32 and 83,846.40 is: 125,715.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,391.36 : 182,008.32 = 83,846.40 : x
  2. Step 2: Convert to fraction form
    121,391.36/182,008.32 = 83,846.40/x
  3. Step 3: Cross multiply
    121,391.36x = 182,008.32 × 83,846.40
  4. Step 4: Simplify right side
    121,391.36x = 15,260,742,402.05
  5. Step 5: Solve for x
    x = 15,260,742,402.05/121,391.36
  6. Step 6: Final answer
    x = 125,715.23

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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.