Home / 128,690,121.56-175,216,512.65-128,281,514.02

Finding the Fourth Proportional to 128,690,121.56, 175,216,512.65 and 128,281,514.02

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Solution

The fourth proportional to 128,690,121.56, 175,216,512.65 and 128,281,514.02 is: 174,660,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,690,121.56 : 175,216,512.65 = 128,281,514.02 : x
  2. Step 2: Convert to fraction form
    128,690,121.56/175,216,512.65 = 128,281,514.02/x
  3. Step 3: Cross multiply
    128,690,121.56x = 175,216,512.65 × 128,281,514.02
  4. Step 4: Simplify right side
    128,690,121.56x = 22,477,039,522,967,036
  5. Step 5: Solve for x
    x = 22,477,039,522,967,036/128,690,121.56
  6. Step 6: Final answer
    x = 174,660,177.89

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.