Home / 109,342.16-164,022.96-42,787.20

Finding the Fourth Proportional to 109,342.16, 164,022.96 and 42,787.20

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Solution

The fourth proportional to 109,342.16, 164,022.96 and 42,787.20 is: 64,184.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,342.16 : 164,022.96 = 42,787.20 : x
  2. Step 2: Convert to fraction form
    109,342.16/164,022.96 = 42,787.20/x
  3. Step 3: Cross multiply
    109,342.16x = 164,022.96 × 42,787.20
  4. Step 4: Simplify right side
    109,342.16x = 7,018,083,194.11
  5. Step 5: Solve for x
    x = 7,018,083,194.11/109,342.16
  6. Step 6: Final answer
    x = 64,184.60

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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.