Home / 109,226.80-163,840.20-42,669.10

Finding the Fourth Proportional to 109,226.80, 163,840.20 and 42,669.10

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Solution

The fourth proportional to 109,226.80, 163,840.20 and 42,669.10 is: 64,003.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,226.80 : 163,840.20 = 42,669.10 : x
  2. Step 2: Convert to fraction form
    109,226.80/163,840.20 = 42,669.10/x
  3. Step 3: Cross multiply
    109,226.80x = 163,840.20 × 42,669.10
  4. Step 4: Simplify right side
    109,226.80x = 6,990,913,877.82
  5. Step 5: Solve for x
    x = 6,990,913,877.82/109,226.80
  6. Step 6: Final answer
    x = 64,003.65

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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.