Home / 115,402.23-159,339.44-74,590.51

Finding the Fourth Proportional to 115,402.23, 159,339.44 and 74,590.51

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Solution

The fourth proportional to 115,402.23, 159,339.44 and 74,590.51 is: 102,989.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,402.23 : 159,339.44 = 74,590.51 : x
  2. Step 2: Convert to fraction form
    115,402.23/159,339.44 = 74,590.51/x
  3. Step 3: Cross multiply
    115,402.23x = 159,339.44 × 74,590.51
  4. Step 4: Simplify right side
    115,402.23x = 11,885,210,279.19
  5. Step 5: Solve for x
    x = 11,885,210,279.19/115,402.23
  6. Step 6: Final answer
    x = 102,989.43

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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.