Home / 129,322,021.20-193,983,031.80-112,693,822.80

Finding the Fourth Proportional to 129,322,021.20, 193,983,031.80 and 112,693,822.80

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Solution

The fourth proportional to 129,322,021.20, 193,983,031.80 and 112,693,822.80 is: 169,040,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,322,021.20 : 193,983,031.80 = 112,693,822.80 : x
  2. Step 2: Convert to fraction form
    129,322,021.20/193,983,031.80 = 112,693,822.80/x
  3. Step 3: Cross multiply
    129,322,021.20x = 193,983,031.80 × 112,693,822.80
  4. Step 4: Simplify right side
    129,322,021.20x = 21,860,689,411,875,964
  5. Step 5: Solve for x
    x = 21,860,689,411,875,964/129,322,021.20
  6. Step 6: Final answer
    x = 169,040,734.20

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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.