Home / 129,875,666.88-179,142,100.32-83,524,555.20

Finding the Fourth Proportional to 129,875,666.88, 179,142,100.32 and 83,524,555.20

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Solution

The fourth proportional to 129,875,666.88, 179,142,100.32 and 83,524,555.20 is: 115,208,372.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,875,666.88 : 179,142,100.32 = 83,524,555.20 : x
  2. Step 2: Convert to fraction form
    129,875,666.88/179,142,100.32 = 83,524,555.20/x
  3. Step 3: Cross multiply
    129,875,666.88x = 179,142,100.32 × 83,524,555.20
  4. Step 4: Simplify right side
    129,875,666.88x = 14,962,764,246,821,778
  5. Step 5: Solve for x
    x = 14,962,764,246,821,778/129,875,666.88
  6. Step 6: Final answer
    x = 115,208,372.79

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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.