Home / 137,107,092.60-189,207,767.25-78,371,018.87

Finding the Fourth Proportional to 137,107,092.60, 189,207,767.25 and 78,371,018.87

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Solution

The fourth proportional to 137,107,092.60, 189,207,767.25 and 78,371,018.87 is: 108,151,994.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,107,092.60 : 189,207,767.25 = 78,371,018.87 : x
  2. Step 2: Convert to fraction form
    137,107,092.60/189,207,767.25 = 78,371,018.87/x
  3. Step 3: Cross multiply
    137,107,092.60x = 189,207,767.25 × 78,371,018.87
  4. Step 4: Simplify right side
    137,107,092.60x = 14,828,405,496,554,278
  5. Step 5: Solve for x
    x = 14,828,405,496,554,278/137,107,092.60
  6. Step 6: Final answer
    x = 108,151,994.29

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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.