Home / 136,818,100.89-205,554,555.03-87,730,128.65

Finding the Fourth Proportional to 136,818,100.89, 205,554,555.03 and 87,730,128.65

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Solution

The fourth proportional to 136,818,100.89, 205,554,555.03 and 87,730,128.65 is: 131,805,129.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,818,100.89 : 205,554,555.03 = 87,730,128.65 : x
  2. Step 2: Convert to fraction form
    136,818,100.89/205,554,555.03 = 87,730,128.65/x
  3. Step 3: Cross multiply
    136,818,100.89x = 205,554,555.03 × 87,730,128.65
  4. Step 4: Simplify right side
    136,818,100.89x = 18,033,327,556,347,632
  5. Step 5: Solve for x
    x = 18,033,327,556,347,632/136,818,100.89
  6. Step 6: Final answer
    x = 131,805,129.87

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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.