Home / 109,139.81-150,612.36-61,393.49

Finding the Fourth Proportional to 109,139.81, 150,612.36 and 61,393.49

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Solution

The fourth proportional to 109,139.81, 150,612.36 and 61,393.49 is: 84,722.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,139.81 : 150,612.36 = 61,393.49 : x
  2. Step 2: Convert to fraction form
    109,139.81/150,612.36 = 61,393.49/x
  3. Step 3: Cross multiply
    109,139.81x = 150,612.36 × 61,393.49
  4. Step 4: Simplify right side
    109,139.81x = 9,246,619,191.58
  5. Step 5: Solve for x
    x = 9,246,619,191.58/109,139.81
  6. Step 6: Final answer
    x = 84,722.70

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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.