Home / 239,123.71-329,980.08-137,076.01

Finding the Fourth Proportional to 239,123.71, 329,980.08 and 137,076.01

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Solution

The fourth proportional to 239,123.71, 329,980.08 and 137,076.01 is: 189,158.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,123.71 : 329,980.08 = 137,076.01 : x
  2. Step 2: Convert to fraction form
    239,123.71/329,980.08 = 137,076.01/x
  3. Step 3: Cross multiply
    239,123.71x = 329,980.08 × 137,076.01
  4. Step 4: Simplify right side
    239,123.71x = 45,232,353,520.05
  5. Step 5: Solve for x
    x = 45,232,353,520.05/239,123.71
  6. Step 6: Final answer
    x = 189,158.80

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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.