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Finding the Fourth Proportional to 159,533.62, 220,157.85 and 87,916.21

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Solution

The fourth proportional to 159,533.62, 220,157.85 and 87,916.21 is: 121,325.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,533.62 : 220,157.85 = 87,916.21 : x
  2. Step 2: Convert to fraction form
    159,533.62/220,157.85 = 87,916.21/x
  3. Step 3: Cross multiply
    159,533.62x = 220,157.85 × 87,916.21
  4. Step 4: Simplify right side
    159,533.62x = 19,355,443,773.75
  5. Step 5: Solve for x
    x = 19,355,443,773.75/159,533.62
  6. Step 6: Final answer
    x = 121,325.17

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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.