Home / 121,238.40-181,886.64-38,132.40

Finding the Fourth Proportional to 121,238.40, 181,886.64 and 38,132.40

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Solution

The fourth proportional to 121,238.40, 181,886.64 and 38,132.40 is: 57,207.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,238.40 : 181,886.64 = 38,132.40 : x
  2. Step 2: Convert to fraction form
    121,238.40/181,886.64 = 38,132.40/x
  3. Step 3: Cross multiply
    121,238.40x = 181,886.64 × 38,132.40
  4. Step 4: Simplify right side
    121,238.40x = 6,935,774,111.14
  5. Step 5: Solve for x
    x = 6,935,774,111.14/121,238.40
  6. Step 6: Final answer
    x = 57,207.73

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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.