Home / 209,971.58-314,972.75-89,911.42

Finding the Fourth Proportional to 209,971.58, 314,972.75 and 89,911.42

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Solution

The fourth proportional to 209,971.58, 314,972.75 and 89,911.42 is: 134,873.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,971.58 : 314,972.75 = 89,911.42 : x
  2. Step 2: Convert to fraction form
    209,971.58/314,972.75 = 89,911.42/x
  3. Step 3: Cross multiply
    209,971.58x = 314,972.75 × 89,911.42
  4. Step 4: Simplify right side
    209,971.58x = 28,319,646,651.15
  5. Step 5: Solve for x
    x = 28,319,646,651.15/209,971.58
  6. Step 6: Final answer
    x = 134,873.72

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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.