Home / 115,481.98-159,356.07-64,490.76

Finding the Fourth Proportional to 115,481.98, 159,356.07 and 64,490.76

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Solution

The fourth proportional to 115,481.98, 159,356.07 and 64,490.76 is: 88,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,481.98 : 159,356.07 = 64,490.76 : x
  2. Step 2: Convert to fraction form
    115,481.98/159,356.07 = 64,490.76/x
  3. Step 3: Cross multiply
    115,481.98x = 159,356.07 × 64,490.76
  4. Step 4: Simplify right side
    115,481.98x = 10,276,994,064.91
  5. Step 5: Solve for x
    x = 10,276,994,064.91/115,481.98
  6. Step 6: Final answer
    x = 88,992.19

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1.5x scale

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.