Home / 138,615,276.40-191,229,035.16-83,580,558.64

Finding the Fourth Proportional to 138,615,276.40, 191,229,035.16 and 83,580,558.64

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Solution

The fourth proportional to 138,615,276.40, 191,229,035.16 and 83,580,558.64 is: 115,304,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,615,276.40 : 191,229,035.16 = 83,580,558.64 : x
  2. Step 2: Convert to fraction form
    138,615,276.40/191,229,035.16 = 83,580,558.64/x
  3. Step 3: Cross multiply
    138,615,276.40x = 191,229,035.16 × 83,580,558.64
  4. Step 4: Simplify right side
    138,615,276.40x = 15,983,029,586,861,002
  5. Step 5: Solve for x
    x = 15,983,029,586,861,002/138,615,276.40
  6. Step 6: Final answer
    x = 115,304,964.95

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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.