Home / 212,203.72-317,878.20-98,190.85

Finding the Fourth Proportional to 212,203.72, 317,878.20 and 98,190.85

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Solution

The fourth proportional to 212,203.72, 317,878.20 and 98,190.85 is: 147,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,203.72 : 317,878.20 = 98,190.85 : x
  2. Step 2: Convert to fraction form
    212,203.72/317,878.20 = 98,190.85/x
  3. Step 3: Cross multiply
    212,203.72x = 317,878.20 × 98,190.85
  4. Step 4: Simplify right side
    212,203.72x = 31,212,730,654.47
  5. Step 5: Solve for x
    x = 31,212,730,654.47/212,203.72
  6. Step 6: Final answer
    x = 147,088.52

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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.