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Finding the Fourth Proportional to 153,927.60, 230,923.80 and 65,135.40

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Solution

The fourth proportional to 153,927.60, 230,923.80 and 65,135.40 is: 97,716.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,927.60 : 230,923.80 = 65,135.40 : x
  2. Step 2: Convert to fraction form
    153,927.60/230,923.80 = 65,135.40/x
  3. Step 3: Cross multiply
    153,927.60x = 230,923.80 × 65,135.40
  4. Step 4: Simplify right side
    153,927.60x = 15,041,314,082.52
  5. Step 5: Solve for x
    x = 15,041,314,082.52/153,927.60
  6. Step 6: Final answer
    x = 97,716.81

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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.