Home / 160,821.20-221,787.98-100,397.42

Finding the Fourth Proportional to 160,821.20, 221,787.98 and 100,397.42

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Solution

The fourth proportional to 160,821.20, 221,787.98 and 100,397.42 is: 138,457.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,821.20 : 221,787.98 = 100,397.42 : x
  2. Step 2: Convert to fraction form
    160,821.20/221,787.98 = 100,397.42/x
  3. Step 3: Cross multiply
    160,821.20x = 221,787.98 × 100,397.42
  4. Step 4: Simplify right side
    160,821.20x = 22,266,939,368.08
  5. Step 5: Solve for x
    x = 22,266,939,368.08/160,821.20
  6. Step 6: Final answer
    x = 138,457.74

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1.5x scale

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.