Home / 250,215.12-345,300.30-137,038.68

Finding the Fourth Proportional to 250,215.12, 345,300.30 and 137,038.68

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Solution

The fourth proportional to 250,215.12, 345,300.30 and 137,038.68 is: 189,115.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,215.12 : 345,300.30 = 137,038.68 : x
  2. Step 2: Convert to fraction form
    250,215.12/345,300.30 = 137,038.68/x
  3. Step 3: Cross multiply
    250,215.12x = 345,300.30 × 137,038.68
  4. Step 4: Simplify right side
    250,215.12x = 47,319,497,315.60
  5. Step 5: Solve for x
    x = 47,319,497,315.60/250,215.12
  6. Step 6: Final answer
    x = 189,115.26

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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.