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Finding the Fourth Proportional to 156,151.84, 215,489.29 and 84,531.84

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Solution

The fourth proportional to 156,151.84, 215,489.29 and 84,531.84 is: 116,653.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,151.84 : 215,489.29 = 84,531.84 : x
  2. Step 2: Convert to fraction form
    156,151.84/215,489.29 = 84,531.84/x
  3. Step 3: Cross multiply
    156,151.84x = 215,489.29 × 84,531.84
  4. Step 4: Simplify right side
    156,151.84x = 18,215,706,722.72
  5. Step 5: Solve for x
    x = 18,215,706,722.72/156,151.84
  6. Step 6: Final answer
    x = 116,653.81

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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.