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Finding the Fourth Proportional to 104,008.80, 156,128.40 and 97,240.80

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Solution

The fourth proportional to 104,008.80, 156,128.40 and 97,240.80 is: 145,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,008.80 : 156,128.40 = 97,240.80 : x
  2. Step 2: Convert to fraction form
    104,008.80/156,128.40 = 97,240.80/x
  3. Step 3: Cross multiply
    104,008.80x = 156,128.40 × 97,240.80
  4. Step 4: Simplify right side
    104,008.80x = 15,182,050,518.72
  5. Step 5: Solve for x
    x = 15,182,050,518.72/104,008.80
  6. Step 6: Final answer
    x = 145,968.90

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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.