Home / 209,721.15-289,428.80-124,826.67

Finding the Fourth Proportional to 209,721.15, 289,428.80 and 124,826.67

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Solution

The fourth proportional to 209,721.15, 289,428.80 and 124,826.67 is: 172,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,721.15 : 289,428.80 = 124,826.67 : x
  2. Step 2: Convert to fraction form
    209,721.15/289,428.80 = 124,826.67/x
  3. Step 3: Cross multiply
    209,721.15x = 289,428.80 × 124,826.67
  4. Step 4: Simplify right side
    209,721.15x = 36,128,432,681.96
  5. Step 5: Solve for x
    x = 36,128,432,681.96/209,721.15
  6. Step 6: Final answer
    x = 172,268.90

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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.