Home / 42,107.76-63,165.40-12,122.16

Finding the Fourth Proportional to 42,107.76, 63,165.40 and 12,122.16

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Solution

The fourth proportional to 42,107.76, 63,165.40 and 12,122.16 is: 18,184.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,107.76 : 63,165.40 = 12,122.16 : x
  2. Step 2: Convert to fraction form
    42,107.76/63,165.40 = 12,122.16/x
  3. Step 3: Cross multiply
    42,107.76x = 63,165.40 × 12,122.16
  4. Step 4: Simplify right side
    42,107.76x = 765,701,085.26
  5. Step 5: Solve for x
    x = 765,701,085.26/42,107.76
  6. Step 6: Final answer
    x = 18,184.32

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1.5x scale

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.