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Finding the Fourth Proportional to 135,980.40, 203,567.40 and 101,074.80

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Solution

The fourth proportional to 135,980.40, 203,567.40 and 101,074.80 is: 151,312.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,980.40 : 203,567.40 = 101,074.80 : x
  2. Step 2: Convert to fraction form
    135,980.40/203,567.40 = 101,074.80/x
  3. Step 3: Cross multiply
    135,980.40x = 203,567.40 × 101,074.80
  4. Step 4: Simplify right side
    135,980.40x = 20,575,534,241.52
  5. Step 5: Solve for x
    x = 20,575,534,241.52/135,980.40
  6. Step 6: Final answer
    x = 151,312.50

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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.