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Finding the Fourth Proportional to 153,903.80, 230,880 and 65,157.86

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Solution

The fourth proportional to 153,903.80, 230,880 and 65,157.86 is: 97,747.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,903.80 : 230,880 = 65,157.86 : x
  2. Step 2: Convert to fraction form
    153,903.80/230,880 = 65,157.86/x
  3. Step 3: Cross multiply
    153,903.80x = 230,880 × 65,157.86
  4. Step 4: Simplify right side
    153,903.80x = 15,043,646,716.80
  5. Step 5: Solve for x
    x = 15,043,646,716.80/153,903.80
  6. Step 6: Final answer
    x = 97,747.08

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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.