Home / 129,901,382.57-179,263,893.08-77,690,409.86

Finding the Fourth Proportional to 129,901,382.57, 179,263,893.08 and 77,690,409.86

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Solution

The fourth proportional to 129,901,382.57, 179,263,893.08 and 77,690,409.86 is: 107,212,756.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901,382.57 : 179,263,893.08 = 77,690,409.86 : x
  2. Step 2: Convert to fraction form
    129,901,382.57/179,263,893.08 = 77,690,409.86/x
  3. Step 3: Cross multiply
    129,901,382.57x = 179,263,893.08 × 77,690,409.86
  4. Step 4: Simplify right side
    129,901,382.57x = 13,927,085,326,484,418
  5. Step 5: Solve for x
    x = 13,927,085,326,484,418/129,901,382.57
  6. Step 6: Final answer
    x = 107,212,756.72

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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.