Home / 112,782.56-169,174.08-45,345.68

Finding the Fourth Proportional to 112,782.56, 169,174.08 and 45,345.68

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Solution

The fourth proportional to 112,782.56, 169,174.08 and 45,345.68 is: 68,018.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,782.56 : 169,174.08 = 45,345.68 : x
  2. Step 2: Convert to fraction form
    112,782.56/169,174.08 = 45,345.68/x
  3. Step 3: Cross multiply
    112,782.56x = 169,174.08 × 45,345.68
  4. Step 4: Simplify right side
    112,782.56x = 7,671,313,695.97
  5. Step 5: Solve for x
    x = 7,671,313,695.97/112,782.56
  6. Step 6: Final answer
    x = 68,018.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.