Home / 144,906.48-199,980.60-81,248.40

Finding the Fourth Proportional to 144,906.48, 199,980.60 and 81,248.40

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Solution

The fourth proportional to 144,906.48, 199,980.60 and 81,248.40 is: 112,128.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,906.48 : 199,980.60 = 81,248.40 : x
  2. Step 2: Convert to fraction form
    144,906.48/199,980.60 = 81,248.40/x
  3. Step 3: Cross multiply
    144,906.48x = 199,980.60 × 81,248.40
  4. Step 4: Simplify right side
    144,906.48x = 16,248,103,781.04
  5. Step 5: Solve for x
    x = 16,248,103,781.04/144,906.48
  6. Step 6: Final answer
    x = 112,128.21

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1.5x scale

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.