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Finding the Fourth Proportional to 156,069.04, 215,378.04 and 88,099.60

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Solution

The fourth proportional to 156,069.04, 215,378.04 and 88,099.60 is: 121,579.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,069.04 : 215,378.04 = 88,099.60 : x
  2. Step 2: Convert to fraction form
    156,069.04/215,378.04 = 88,099.60/x
  3. Step 3: Cross multiply
    156,069.04x = 215,378.04 × 88,099.60
  4. Step 4: Simplify right side
    156,069.04x = 18,974,719,172.78
  5. Step 5: Solve for x
    x = 18,974,719,172.78/156,069.04
  6. Step 6: Final answer
    x = 121,579.01

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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.