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Finding the Fourth Proportional to 167,985.60, 251,978.40 and 155,155.20

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Solution

The fourth proportional to 167,985.60, 251,978.40 and 155,155.20 is: 232,732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,985.60 : 251,978.40 = 155,155.20 : x
  2. Step 2: Convert to fraction form
    167,985.60/251,978.40 = 155,155.20/x
  3. Step 3: Cross multiply
    167,985.60x = 251,978.40 × 155,155.20
  4. Step 4: Simplify right side
    167,985.60x = 39,095,759,047.68
  5. Step 5: Solve for x
    x = 39,095,759,047.68/167,985.60
  6. Step 6: Final answer
    x = 232,732.80

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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.