Home / 137,218,948.48-189,337,446.30-77,679,843.40

Finding the Fourth Proportional to 137,218,948.48, 189,337,446.30 and 77,679,843.40

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Solution

The fourth proportional to 137,218,948.48, 189,337,446.30 and 77,679,843.40 is: 107,184,199.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,218,948.48 : 189,337,446.30 = 77,679,843.40 : x
  2. Step 2: Convert to fraction form
    137,218,948.48/189,337,446.30 = 77,679,843.40/x
  3. Step 3: Cross multiply
    137,218,948.48x = 189,337,446.30 × 77,679,843.40
  4. Step 4: Simplify right side
    137,218,948.48x = 14,707,703,178,339,912
  5. Step 5: Solve for x
    x = 14,707,703,178,339,912/137,218,948.48
  6. Step 6: Final answer
    x = 107,184,199.71

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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.