Home / 138,702,000.12-191,411,853.03-79,162,101.96

Finding the Fourth Proportional to 138,702,000.12, 191,411,853.03 and 79,162,101.96

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Solution

The fourth proportional to 138,702,000.12, 191,411,853.03 and 79,162,101.96 is: 109,245,465.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,702,000.12 : 191,411,853.03 = 79,162,101.96 : x
  2. Step 2: Convert to fraction form
    138,702,000.12/191,411,853.03 = 79,162,101.96/x
  3. Step 3: Cross multiply
    138,702,000.12x = 191,411,853.03 × 79,162,101.96
  4. Step 4: Simplify right side
    138,702,000.12x = 15,152,564,625,913,394
  5. Step 5: Solve for x
    x = 15,152,564,625,913,394/138,702,000.12
  6. Step 6: Final answer
    x = 109,245,465.91

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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.