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Finding the Fourth Proportional to 158,954.70, 238,432.05 and 85,226.70

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Solution

The fourth proportional to 158,954.70, 238,432.05 and 85,226.70 is: 127,840.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,954.70 : 238,432.05 = 85,226.70 : x
  2. Step 2: Convert to fraction form
    158,954.70/238,432.05 = 85,226.70/x
  3. Step 3: Cross multiply
    158,954.70x = 238,432.05 × 85,226.70
  4. Step 4: Simplify right side
    158,954.70x = 20,320,776,795.74
  5. Step 5: Solve for x
    x = 20,320,776,795.74/158,954.70
  6. Step 6: Final answer
    x = 127,840.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.