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Finding the Fourth Proportional to 159,227.20, 219,728.88 and 87,607.20

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Solution

The fourth proportional to 159,227.20, 219,728.88 and 87,607.20 is: 120,895.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,227.20 : 219,728.88 = 87,607.20 : x
  2. Step 2: Convert to fraction form
    159,227.20/219,728.88 = 87,607.20/x
  3. Step 3: Cross multiply
    159,227.20x = 219,728.88 × 87,607.20
  4. Step 4: Simplify right side
    159,227.20x = 19,249,831,935.94
  5. Step 5: Solve for x
    x = 19,249,831,935.94/159,227.20
  6. Step 6: Final answer
    x = 120,895.37

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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.