Home / 109,438.10-164,035.65-42,856.10

Finding the Fourth Proportional to 109,438.10, 164,035.65 and 42,856.10

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Solution

The fourth proportional to 109,438.10, 164,035.65 and 42,856.10 is: 64,236.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,438.10 : 164,035.65 = 42,856.10 : x
  2. Step 2: Convert to fraction form
    109,438.10/164,035.65 = 42,856.10/x
  3. Step 3: Cross multiply
    109,438.10x = 164,035.65 × 42,856.10
  4. Step 4: Simplify right side
    109,438.10x = 7,029,928,219.97
  5. Step 5: Solve for x
    x = 7,029,928,219.97/109,438.10
  6. Step 6: Final answer
    x = 64,236.57

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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.