Home / 121,983,411.54-168,337,108.85-66,979,268.04

Finding the Fourth Proportional to 121,983,411.54, 168,337,108.85 and 66,979,268.04

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Solution

The fourth proportional to 121,983,411.54, 168,337,108.85 and 66,979,268.04 is: 92,431,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,983,411.54 : 168,337,108.85 = 66,979,268.04 : x
  2. Step 2: Convert to fraction form
    121,983,411.54/168,337,108.85 = 66,979,268.04/x
  3. Step 3: Cross multiply
    121,983,411.54x = 168,337,108.85 × 66,979,268.04
  4. Step 4: Simplify right side
    121,983,411.54x = 11,275,096,334,407,910
  5. Step 5: Solve for x
    x = 11,275,096,334,407,910/121,983,411.54
  6. Step 6: Final answer
    x = 92,431,390.40

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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.