Home / 136,385,315.20-188,218,453.44-77,649,143.68

Finding the Fourth Proportional to 136,385,315.20, 188,218,453.44 and 77,649,143.68

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Solution

The fourth proportional to 136,385,315.20, 188,218,453.44 and 77,649,143.68 is: 107,159,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,385,315.20 : 188,218,453.44 = 77,649,143.68 : x
  2. Step 2: Convert to fraction form
    136,385,315.20/188,218,453.44 = 77,649,143.68/x
  3. Step 3: Cross multiply
    136,385,315.20x = 188,218,453.44 × 77,649,143.68
  4. Step 4: Simplify right side
    136,385,315.20x = 14,615,001,734,389,952
  5. Step 5: Solve for x
    x = 14,615,001,734,389,952/136,385,315.20
  6. Step 6: Final answer
    x = 107,159,643.35

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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.