Home / 157,756,872.16-217,715,749.12-87,190,965.91

Finding the Fourth Proportional to 157,756,872.16, 217,715,749.12 and 87,190,965.91

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Solution

The fourth proportional to 157,756,872.16, 217,715,749.12 and 87,190,965.91 is: 120,329,759.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,756,872.16 : 217,715,749.12 = 87,190,965.91 : x
  2. Step 2: Convert to fraction form
    157,756,872.16/217,715,749.12 = 87,190,965.91/x
  3. Step 3: Cross multiply
    157,756,872.16x = 217,715,749.12 × 87,190,965.91
  4. Step 4: Simplify right side
    157,756,872.16x = 18,982,846,459,973,164
  5. Step 5: Solve for x
    x = 18,982,846,459,973,164/157,756,872.16
  6. Step 6: Final answer
    x = 120,329,759.34

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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.