Home / 159,534.06-220,156.95-87,913.45

Finding the Fourth Proportional to 159,534.06, 220,156.95 and 87,913.45

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Solution

The fourth proportional to 159,534.06, 220,156.95 and 87,913.45 is: 121,320.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,534.06 : 220,156.95 = 87,913.45 : x
  2. Step 2: Convert to fraction form
    159,534.06/220,156.95 = 87,913.45/x
  3. Step 3: Cross multiply
    159,534.06x = 220,156.95 × 87,913.45
  4. Step 4: Simplify right side
    159,534.06x = 19,354,757,015.98
  5. Step 5: Solve for x
    x = 19,354,757,015.98/159,534.06
  6. Step 6: Final answer
    x = 121,320.53

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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.