Home / 145,764,921.92-200,084,849.72-128,875,062.65

Finding the Fourth Proportional to 145,764,921.92, 200,084,849.72 and 128,875,062.65

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Solution

The fourth proportional to 145,764,921.92, 200,084,849.72 and 128,875,062.65 is: 176,900,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,764,921.92 : 200,084,849.72 = 128,875,062.65 : x
  2. Step 2: Convert to fraction form
    145,764,921.92/200,084,849.72 = 128,875,062.65/x
  3. Step 3: Cross multiply
    145,764,921.92x = 200,084,849.72 × 128,875,062.65
  4. Step 4: Simplify right side
    145,764,921.92x = 25,785,947,541,336,036
  5. Step 5: Solve for x
    x = 25,785,947,541,336,036/145,764,921.92
  6. Step 6: Final answer
    x = 176,900,911.43

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.