Home / 209,015.84-288,433.68-124,130.72

Finding the Fourth Proportional to 209,015.84, 288,433.68 and 124,130.72

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Solution

The fourth proportional to 209,015.84, 288,433.68 and 124,130.72 is: 171,295.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,015.84 : 288,433.68 = 124,130.72 : x
  2. Step 2: Convert to fraction form
    209,015.84/288,433.68 = 124,130.72/x
  3. Step 3: Cross multiply
    209,015.84x = 288,433.68 × 124,130.72
  4. Step 4: Simplify right side
    209,015.84x = 35,803,480,370.65
  5. Step 5: Solve for x
    x = 35,803,480,370.65/209,015.84
  6. Step 6: Final answer
    x = 171,295.54

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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.