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Finding the Fourth Proportional to 153,902.40, 230,486.40 and 74,762.40

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Solution

The fourth proportional to 153,902.40, 230,486.40 and 74,762.40 is: 111,965.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,902.40 : 230,486.40 = 74,762.40 : x
  2. Step 2: Convert to fraction form
    153,902.40/230,486.40 = 74,762.40/x
  3. Step 3: Cross multiply
    153,902.40x = 230,486.40 × 74,762.40
  4. Step 4: Simplify right side
    153,902.40x = 17,231,716,431.36
  5. Step 5: Solve for x
    x = 17,231,716,431.36/153,902.40
  6. Step 6: Final answer
    x = 111,965.22

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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.