Home / 121,790,279.70-168,072,767.03-66,037,580.78

Finding the Fourth Proportional to 121,790,279.70, 168,072,767.03 and 66,037,580.78

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Solution

The fourth proportional to 121,790,279.70, 168,072,767.03 and 66,037,580.78 is: 91,133,044.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,790,279.70 : 168,072,767.03 = 66,037,580.78 : x
  2. Step 2: Convert to fraction form
    121,790,279.70/168,072,767.03 = 66,037,580.78/x
  3. Step 3: Cross multiply
    121,790,279.70x = 168,072,767.03 × 66,037,580.78
  4. Step 4: Simplify right side
    121,790,279.70x = 11,099,118,928,986,476
  5. Step 5: Solve for x
    x = 11,099,118,928,986,476/121,790,279.70
  6. Step 6: Final answer
    x = 91,133,044.08

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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.