Home / 156,140.69-215,461.60-88,174.20

Finding the Fourth Proportional to 156,140.69, 215,461.60 and 88,174.20

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Solution

The fourth proportional to 156,140.69, 215,461.60 and 88,174.20 is: 121,673.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,140.69 : 215,461.60 = 88,174.20 : x
  2. Step 2: Convert to fraction form
    156,140.69/215,461.60 = 88,174.20/x
  3. Step 3: Cross multiply
    156,140.69x = 215,461.60 × 88,174.20
  4. Step 4: Simplify right side
    156,140.69x = 18,998,153,672.07
  5. Step 5: Solve for x
    x = 18,998,153,672.07/156,140.69
  6. Step 6: Final answer
    x = 121,673.30

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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.