Home / 137,187.47-206,809.45-128,043.08

Finding the Fourth Proportional to 137,187.47, 206,809.45 and 128,043.08

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Solution

The fourth proportional to 137,187.47, 206,809.45 and 128,043.08 is: 193,024.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,187.47 : 206,809.45 = 128,043.08 : x
  2. Step 2: Convert to fraction form
    137,187.47/206,809.45 = 128,043.08/x
  3. Step 3: Cross multiply
    137,187.47x = 206,809.45 × 128,043.08
  4. Step 4: Simplify right side
    137,187.47x = 26,480,518,951.11
  5. Step 5: Solve for x
    x = 26,480,518,951.11/137,187.47
  6. Step 6: Final answer
    x = 193,024.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.