Home / 96,940.60-145,430.10-81,465.40

Finding the Fourth Proportional to 96,940.60, 145,430.10 and 81,465.40

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Solution

The fourth proportional to 96,940.60, 145,430.10 and 81,465.40 is: 122,214.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,940.60 : 145,430.10 = 81,465.40 : x
  2. Step 2: Convert to fraction form
    96,940.60/145,430.10 = 81,465.40/x
  3. Step 3: Cross multiply
    96,940.60x = 145,430.10 × 81,465.40
  4. Step 4: Simplify right side
    96,940.60x = 11,847,521,268.54
  5. Step 5: Solve for x
    x = 11,847,521,268.54/96,940.60
  6. Step 6: Final answer
    x = 122,214.23

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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.