Home / 159,017.05-219,432.32-87,401.71

Finding the Fourth Proportional to 159,017.05, 219,432.32 and 87,401.71

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Solution

The fourth proportional to 159,017.05, 219,432.32 and 87,401.71 is: 120,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,017.05 : 219,432.32 = 87,401.71 : x
  2. Step 2: Convert to fraction form
    159,017.05/219,432.32 = 87,401.71/x
  3. Step 3: Cross multiply
    159,017.05x = 219,432.32 × 87,401.71
  4. Step 4: Simplify right side
    159,017.05x = 19,178,758,900.11
  5. Step 5: Solve for x
    x = 19,178,758,900.11/159,017.05
  6. Step 6: Final answer
    x = 120,608.20

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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.