Home / 100,662,857.17-138,912,564.79-58,278,203.72

Finding the Fourth Proportional to 100,662,857.17, 138,912,564.79 and 58,278,203.72

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Solution

The fourth proportional to 100,662,857.17, 138,912,564.79 and 58,278,203.72 is: 80,422,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,662,857.17 : 138,912,564.79 = 58,278,203.72 : x
  2. Step 2: Convert to fraction form
    100,662,857.17/138,912,564.79 = 58,278,203.72/x
  3. Step 3: Cross multiply
    100,662,857.17x = 138,912,564.79 × 58,278,203.72
  4. Step 4: Simplify right side
    100,662,857.17x = 8,095,574,750,099,318
  5. Step 5: Solve for x
    x = 8,095,574,750,099,318/100,662,857.17
  6. Step 6: Final answer
    x = 80,422,660.13

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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.