Home / 142,053,020.20-213,303,479.10-81,586,844.20

Finding the Fourth Proportional to 142,053,020.20, 213,303,479.10 and 81,586,844.20

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Solution

The fourth proportional to 142,053,020.20, 213,303,479.10 and 81,586,844.20 is: 122,508,889.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,053,020.20 : 213,303,479.10 = 81,586,844.20 : x
  2. Step 2: Convert to fraction form
    142,053,020.20/213,303,479.10 = 81,586,844.20/x
  3. Step 3: Cross multiply
    142,053,020.20x = 213,303,479.10 × 81,586,844.20
  4. Step 4: Simplify right side
    142,053,020.20x = 17,402,757,716,649,656
  5. Step 5: Solve for x
    x = 17,402,757,716,649,656/142,053,020.20
  6. Step 6: Final answer
    x = 122,508,889.23

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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.