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Finding the Fourth Proportional to 207,319.55, 310,835.03 and 91,851.35

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Solution

The fourth proportional to 207,319.55, 310,835.03 and 91,851.35 is: 137,713.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,319.55 : 310,835.03 = 91,851.35 : x
  2. Step 2: Convert to fraction form
    207,319.55/310,835.03 = 91,851.35/x
  3. Step 3: Cross multiply
    207,319.55x = 310,835.03 × 91,851.35
  4. Step 4: Simplify right side
    207,319.55x = 28,550,615,808.24
  5. Step 5: Solve for x
    x = 28,550,615,808.24/207,319.55
  6. Step 6: Final answer
    x = 137,713.09

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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.