Home / 134,543-185,669.39-77,987.18

Finding the Fourth Proportional to 134,543, 185,669.39 and 77,987.18

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Solution

The fourth proportional to 134,543, 185,669.39 and 77,987.18 is: 107,622.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,543 : 185,669.39 = 77,987.18 : x
  2. Step 2: Convert to fraction form
    134,543/185,669.39 = 77,987.18/x
  3. Step 3: Cross multiply
    134,543x = 185,669.39 × 77,987.18
  4. Step 4: Simplify right side
    134,543x = 14,479,832,138.42
  5. Step 5: Solve for x
    x = 14,479,832,138.42/134,543
  6. Step 6: Final answer
    x = 107,622.34

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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.