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Finding the Fourth Proportional to 191,155.20, 286,635.60 and 112,293.60

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Solution

The fourth proportional to 191,155.20, 286,635.60 and 112,293.60 is: 168,383.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,155.20 : 286,635.60 = 112,293.60 : x
  2. Step 2: Convert to fraction form
    191,155.20/286,635.60 = 112,293.60/x
  3. Step 3: Cross multiply
    191,155.20x = 286,635.60 × 112,293.60
  4. Step 4: Simplify right side
    191,155.20x = 32,187,343,412.16
  5. Step 5: Solve for x
    x = 32,187,343,412.16/191,155.20
  6. Step 6: Final answer
    x = 168,383.30

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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.