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Finding the Fourth Proportional to 153,970.20, 231,128.10 and 119,064.60

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Solution

The fourth proportional to 153,970.20, 231,128.10 and 119,064.60 is: 178,730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,970.20 : 231,128.10 = 119,064.60 : x
  2. Step 2: Convert to fraction form
    153,970.20/231,128.10 = 119,064.60/x
  3. Step 3: Cross multiply
    153,970.20x = 231,128.10 × 119,064.60
  4. Step 4: Simplify right side
    153,970.20x = 27,519,174,775.26
  5. Step 5: Solve for x
    x = 27,519,174,775.26/153,970.20
  6. Step 6: Final answer
    x = 178,730.53

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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.