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Finding the Fourth Proportional to 160,363.12, 240,415.08 and 66,938.80

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Solution

The fourth proportional to 160,363.12, 240,415.08 and 66,938.80 is: 100,354.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,363.12 : 240,415.08 = 66,938.80 : x
  2. Step 2: Convert to fraction form
    160,363.12/240,415.08 = 66,938.80/x
  3. Step 3: Cross multiply
    160,363.12x = 240,415.08 × 66,938.80
  4. Step 4: Simplify right side
    160,363.12x = 16,093,096,957.10
  5. Step 5: Solve for x
    x = 16,093,096,957.10/160,363.12
  6. Step 6: Final answer
    x = 100,354.10

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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.