Home / 250,605.09-345,820.59-137,427.84

Finding the Fourth Proportional to 250,605.09, 345,820.59 and 137,427.84

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Solution

The fourth proportional to 250,605.09, 345,820.59 and 137,427.84 is: 189,642.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,605.09 : 345,820.59 = 137,427.84 : x
  2. Step 2: Convert to fraction form
    250,605.09/345,820.59 = 137,427.84/x
  3. Step 3: Cross multiply
    250,605.09x = 345,820.59 × 137,427.84
  4. Step 4: Simplify right side
    250,605.09x = 47,525,376,711.23
  5. Step 5: Solve for x
    x = 47,525,376,711.23/250,605.09
  6. Step 6: Final answer
    x = 189,642.50

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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.