Home / 159,019.29-219,445.95-87,402.33

Finding the Fourth Proportional to 159,019.29, 219,445.95 and 87,402.33

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Solution

The fourth proportional to 159,019.29, 219,445.95 and 87,402.33 is: 120,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,019.29 : 219,445.95 = 87,402.33 : x
  2. Step 2: Convert to fraction form
    159,019.29/219,445.95 = 87,402.33/x
  3. Step 3: Cross multiply
    159,019.29x = 219,445.95 × 87,402.33
  4. Step 4: Simplify right side
    159,019.29x = 19,180,087,339.06
  5. Step 5: Solve for x
    x = 19,180,087,339.06/159,019.29
  6. Step 6: Final answer
    x = 120,614.85

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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.