Home / 129,697,839.88-178,965,342.70-77,475,790.06

Finding the Fourth Proportional to 129,697,839.88, 178,965,342.70 and 77,475,790.06

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Solution

The fourth proportional to 129,697,839.88, 178,965,342.70 and 77,475,790.06 is: 106,906,031.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,697,839.88 : 178,965,342.70 = 77,475,790.06 : x
  2. Step 2: Convert to fraction form
    129,697,839.88/178,965,342.70 = 77,475,790.06/x
  3. Step 3: Cross multiply
    129,697,839.88x = 178,965,342.70 × 77,475,790.06
  4. Step 4: Simplify right side
    129,697,839.88x = 13,865,481,319,041,154
  5. Step 5: Solve for x
    x = 13,865,481,319,041,154/129,697,839.88
  6. Step 6: Final answer
    x = 106,906,031.22

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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.