Home / 239,005.12-329,830.86-137,039.56

Finding the Fourth Proportional to 239,005.12, 329,830.86 and 137,039.56

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Solution

The fourth proportional to 239,005.12, 329,830.86 and 137,039.56 is: 189,116.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,005.12 : 329,830.86 = 137,039.56 : x
  2. Step 2: Convert to fraction form
    239,005.12/329,830.86 = 137,039.56/x
  3. Step 3: Cross multiply
    239,005.12x = 329,830.86 × 137,039.56
  4. Step 4: Simplify right side
    239,005.12x = 45,199,875,928.82
  5. Step 5: Solve for x
    x = 45,199,875,928.82/239,005.12
  6. Step 6: Final answer
    x = 189,116.77

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1.5x scale

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.