Home / 138,677,156.82-191,370,813.57-79,137,385.79

Finding the Fourth Proportional to 138,677,156.82, 191,370,813.57 and 79,137,385.79

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Solution

The fourth proportional to 138,677,156.82, 191,370,813.57 and 79,137,385.79 is: 109,207,502.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,677,156.82 : 191,370,813.57 = 79,137,385.79 : x
  2. Step 2: Convert to fraction form
    138,677,156.82/191,370,813.57 = 79,137,385.79/x
  3. Step 3: Cross multiply
    138,677,156.82x = 191,370,813.57 × 79,137,385.79
  4. Step 4: Simplify right side
    138,677,156.82x = 15,144,585,901,478,402
  5. Step 5: Solve for x
    x = 15,144,585,901,478,402/138,677,156.82
  6. Step 6: Final answer
    x = 109,207,502.15

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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.