Home / 209,821.64-314,666.82-91,373.72

Finding the Fourth Proportional to 209,821.64, 314,666.82 and 91,373.72

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Solution

The fourth proportional to 209,821.64, 314,666.82 and 91,373.72 is: 137,031.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,821.64 : 314,666.82 = 91,373.72 : x
  2. Step 2: Convert to fraction form
    209,821.64/314,666.82 = 91,373.72/x
  3. Step 3: Cross multiply
    209,821.64x = 314,666.82 × 91,373.72
  4. Step 4: Simplify right side
    209,821.64x = 28,752,276,330.64
  5. Step 5: Solve for x
    x = 28,752,276,330.64/209,821.64
  6. Step 6: Final answer
    x = 137,031.99

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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.