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Finding the Fourth Proportional to 109,431.50, 151,015.47 and 59,130.50

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Solution

The fourth proportional to 109,431.50, 151,015.47 and 59,130.50 is: 81,600.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,431.50 : 151,015.47 = 59,130.50 : x
  2. Step 2: Convert to fraction form
    109,431.50/151,015.47 = 59,130.50/x
  3. Step 3: Cross multiply
    109,431.50x = 151,015.47 × 59,130.50
  4. Step 4: Simplify right side
    109,431.50x = 8,929,620,248.84
  5. Step 5: Solve for x
    x = 8,929,620,248.84/109,431.50
  6. Step 6: Final answer
    x = 81,600.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.