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Finding the Fourth Proportional to 180,737.42, 270,820.98 and 66,728.45

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Solution

The fourth proportional to 180,737.42, 270,820.98 and 66,728.45 is: 99,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,737.42 : 270,820.98 = 66,728.45 : x
  2. Step 2: Convert to fraction form
    180,737.42/270,820.98 = 66,728.45/x
  3. Step 3: Cross multiply
    180,737.42x = 270,820.98 × 66,728.45
  4. Step 4: Simplify right side
    180,737.42x = 18,071,463,889.24
  5. Step 5: Solve for x
    x = 18,071,463,889.24/180,737.42
  6. Step 6: Final answer
    x = 99,987.40

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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.