Home / 209,020.32-288,472.59-124,137.36

Finding the Fourth Proportional to 209,020.32, 288,472.59 and 124,137.36

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Solution

The fourth proportional to 209,020.32, 288,472.59 and 124,137.36 is: 171,324.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,020.32 : 288,472.59 = 124,137.36 : x
  2. Step 2: Convert to fraction form
    209,020.32/288,472.59 = 124,137.36/x
  3. Step 3: Cross multiply
    209,020.32x = 288,472.59 × 124,137.36
  4. Step 4: Simplify right side
    209,020.32x = 35,810,225,754.96
  5. Step 5: Solve for x
    x = 35,810,225,754.96/209,020.32
  6. Step 6: Final answer
    x = 171,324.14

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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.