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Finding the Fourth Proportional to 140,985.60, 211,089.60 and 109,881.60

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Solution

The fourth proportional to 140,985.60, 211,089.60 and 109,881.60 is: 164,519.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,985.60 : 211,089.60 = 109,881.60 : x
  2. Step 2: Convert to fraction form
    140,985.60/211,089.60 = 109,881.60/x
  3. Step 3: Cross multiply
    140,985.60x = 211,089.60 × 109,881.60
  4. Step 4: Simplify right side
    140,985.60x = 23,194,862,991.36
  5. Step 5: Solve for x
    x = 23,194,862,991.36/140,985.60
  6. Step 6: Final answer
    x = 164,519.38

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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.