Home / 178,088,021.80-266,976,512.70-68,987,631.40

Finding the Fourth Proportional to 178,088,021.80, 266,976,512.70 and 68,987,631.40

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Solution

The fourth proportional to 178,088,021.80, 266,976,512.70 and 68,987,631.40 is: 103,421,201.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,088,021.80 : 266,976,512.70 = 68,987,631.40 : x
  2. Step 2: Convert to fraction form
    178,088,021.80/266,976,512.70 = 68,987,631.40/x
  3. Step 3: Cross multiply
    178,088,021.80x = 266,976,512.70 × 68,987,631.40
  4. Step 4: Simplify right side
    178,088,021.80x = 18,418,077,250,605,020
  5. Step 5: Solve for x
    x = 18,418,077,250,605,020/178,088,021.80
  6. Step 6: Final answer
    x = 103,421,201.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.