Home / 129,279,672.87-178,359,329.51-99,519,422.77

Finding the Fourth Proportional to 129,279,672.87, 178,359,329.51 and 99,519,422.77

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Solution

The fourth proportional to 129,279,672.87, 178,359,329.51 and 99,519,422.77 is: 137,300,916.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,279,672.87 : 178,359,329.51 = 99,519,422.77 : x
  2. Step 2: Convert to fraction form
    129,279,672.87/178,359,329.51 = 99,519,422.77/x
  3. Step 3: Cross multiply
    129,279,672.87x = 178,359,329.51 × 99,519,422.77
  4. Step 4: Simplify right side
    129,279,672.87x = 17,750,217,518,799,872
  5. Step 5: Solve for x
    x = 17,750,217,518,799,872/129,279,672.87
  6. Step 6: Final answer
    x = 137,300,916.11

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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.