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Finding the Fourth Proportional to 207,165.96, 310,525.65 and 100,323.72

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Solution

The fourth proportional to 207,165.96, 310,525.65 and 100,323.72 is: 150,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,165.96 : 310,525.65 = 100,323.72 : x
  2. Step 2: Convert to fraction form
    207,165.96/310,525.65 = 100,323.72/x
  3. Step 3: Cross multiply
    207,165.96x = 310,525.65 × 100,323.72
  4. Step 4: Simplify right side
    207,165.96x = 31,153,088,363.42
  5. Step 5: Solve for x
    x = 31,153,088,363.42/207,165.96
  6. Step 6: Final answer
    x = 150,377.45

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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.