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Finding the Fourth Proportional to 109,579, 151,219.20 and 59,278

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Solution

The fourth proportional to 109,579, 151,219.20 and 59,278 is: 81,803.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,579 : 151,219.20 = 59,278 : x
  2. Step 2: Convert to fraction form
    109,579/151,219.20 = 59,278/x
  3. Step 3: Cross multiply
    109,579x = 151,219.20 × 59,278
  4. Step 4: Simplify right side
    109,579x = 8,963,971,737.60
  5. Step 5: Solve for x
    x = 8,963,971,737.60/109,579
  6. Step 6: Final answer
    x = 81,803.74

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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.