Home / 137,427.23-189,565.75-90,859.93

Finding the Fourth Proportional to 137,427.23, 189,565.75 and 90,859.93

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Solution

The fourth proportional to 137,427.23, 189,565.75 and 90,859.93 is: 125,331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,427.23 : 189,565.75 = 90,859.93 : x
  2. Step 2: Convert to fraction form
    137,427.23/189,565.75 = 90,859.93/x
  3. Step 3: Cross multiply
    137,427.23x = 189,565.75 × 90,859.93
  4. Step 4: Simplify right side
    137,427.23x = 17,223,930,415.06
  5. Step 5: Solve for x
    x = 17,223,930,415.06/137,427.23
  6. Step 6: Final answer
    x = 125,331.28

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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.