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Finding the Fourth Proportional to 104,005.40, 156,008.10 and 87,092.60

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Solution

The fourth proportional to 104,005.40, 156,008.10 and 87,092.60 is: 130,638.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,005.40 : 156,008.10 = 87,092.60 : x
  2. Step 2: Convert to fraction form
    104,005.40/156,008.10 = 87,092.60/x
  3. Step 3: Cross multiply
    104,005.40x = 156,008.10 × 87,092.60
  4. Step 4: Simplify right side
    104,005.40x = 13,587,151,050.06
  5. Step 5: Solve for x
    x = 13,587,151,050.06/104,005.40
  6. Step 6: Final answer
    x = 130,638.90

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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.