Home / 189,256.40-261,174.05-103,215.51

Finding the Fourth Proportional to 189,256.40, 261,174.05 and 103,215.51

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Solution

The fourth proportional to 189,256.40, 261,174.05 and 103,215.51 is: 142,437.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,256.40 : 261,174.05 = 103,215.51 : x
  2. Step 2: Convert to fraction form
    189,256.40/261,174.05 = 103,215.51/x
  3. Step 3: Cross multiply
    189,256.40x = 261,174.05 × 103,215.51
  4. Step 4: Simplify right side
    189,256.40x = 26,957,212,769.52
  5. Step 5: Solve for x
    x = 26,957,212,769.52/189,256.40
  6. Step 6: Final answer
    x = 142,437.52

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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.