Home / 155,005.07-213,909.32-149,641.43

Finding the Fourth Proportional to 155,005.07, 213,909.32 and 149,641.43

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Solution

The fourth proportional to 155,005.07, 213,909.32 and 149,641.43 is: 206,507.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,005.07 : 213,909.32 = 149,641.43 : x
  2. Step 2: Convert to fraction form
    155,005.07/213,909.32 = 149,641.43/x
  3. Step 3: Cross multiply
    155,005.07x = 213,909.32 × 149,641.43
  4. Step 4: Simplify right side
    155,005.07x = 32,009,695,839.68
  5. Step 5: Solve for x
    x = 32,009,695,839.68/155,005.07
  6. Step 6: Final answer
    x = 206,507.42

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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.