Home / 115,267.78-159,063.36-64,285.72

Finding the Fourth Proportional to 115,267.78, 159,063.36 and 64,285.72

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Solution

The fourth proportional to 115,267.78, 159,063.36 and 64,285.72 is: 88,710.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,267.78 : 159,063.36 = 64,285.72 : x
  2. Step 2: Convert to fraction form
    115,267.78/159,063.36 = 64,285.72/x
  3. Step 3: Cross multiply
    115,267.78x = 159,063.36 × 64,285.72
  4. Step 4: Simplify right side
    115,267.78x = 10,225,502,623.22
  5. Step 5: Solve for x
    x = 10,225,502,623.22/115,267.78
  6. Step 6: Final answer
    x = 88,710.85

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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.