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Finding the Fourth Proportional to 156,112.65, 215,435.21 and 84,492.63

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Solution

The fourth proportional to 156,112.65, 215,435.21 and 84,492.63 is: 116,599.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,112.65 : 215,435.21 = 84,492.63 : x
  2. Step 2: Convert to fraction form
    156,112.65/215,435.21 = 84,492.63/x
  3. Step 3: Cross multiply
    156,112.65x = 215,435.21 × 84,492.63
  4. Step 4: Simplify right side
    156,112.65x = 18,202,687,065.04
  5. Step 5: Solve for x
    x = 18,202,687,065.04/156,112.65
  6. Step 6: Final answer
    x = 116,599.69

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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.