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Finding the Fourth Proportional to 159,533.94, 220,146.43 and 87,913.95

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Solution

The fourth proportional to 159,533.94, 220,146.43 and 87,913.95 is: 121,315.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,533.94 : 220,146.43 = 87,913.95 : x
  2. Step 2: Convert to fraction form
    159,533.94/220,146.43 = 87,913.95/x
  3. Step 3: Cross multiply
    159,533.94x = 220,146.43 × 87,913.95
  4. Step 4: Simplify right side
    159,533.94x = 19,353,940,699.40
  5. Step 5: Solve for x
    x = 19,353,940,699.40/159,533.94
  6. Step 6: Final answer
    x = 121,315.51

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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.