Home / 139,637.09-209,560.86-102,292.71

Finding the Fourth Proportional to 139,637.09, 209,560.86 and 102,292.71

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Solution

The fourth proportional to 139,637.09, 209,560.86 and 102,292.71 is: 153,516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,637.09 : 209,560.86 = 102,292.71 : x
  2. Step 2: Convert to fraction form
    139,637.09/209,560.86 = 102,292.71/x
  3. Step 3: Cross multiply
    139,637.09x = 209,560.86 × 102,292.71
  4. Step 4: Simplify right side
    139,637.09x = 21,436,548,279.33
  5. Step 5: Solve for x
    x = 21,436,548,279.33/139,637.09
  6. Step 6: Final answer
    x = 153,516.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.