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Finding the Fourth Proportional to 158,626.95, 218,905.50 and 87,007.56

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Solution

The fourth proportional to 158,626.95, 218,905.50 and 87,007.56 is: 120,070.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,626.95 : 218,905.50 = 87,007.56 : x
  2. Step 2: Convert to fraction form
    158,626.95/218,905.50 = 87,007.56/x
  3. Step 3: Cross multiply
    158,626.95x = 218,905.50 × 87,007.56
  4. Step 4: Simplify right side
    158,626.95x = 19,046,432,331.05
  5. Step 5: Solve for x
    x = 19,046,432,331.05/158,626.95
  6. Step 6: Final answer
    x = 120,070.60

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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.