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Finding the Fourth Proportional to 207,158.57, 310,750.99 and 65,009.45

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Solution

The fourth proportional to 207,158.57, 310,750.99 and 65,009.45 is: 97,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,158.57 : 310,750.99 = 65,009.45 : x
  2. Step 2: Convert to fraction form
    207,158.57/310,750.99 = 65,009.45/x
  3. Step 3: Cross multiply
    207,158.57x = 310,750.99 × 65,009.45
  4. Step 4: Simplify right side
    207,158.57x = 20,201,750,193.09
  5. Step 5: Solve for x
    x = 20,201,750,193.09/207,158.57
  6. Step 6: Final answer
    x = 97,518.29

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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.