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Finding the Fourth Proportional to 134,230.40, 201,115.20 and 87,459.20

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Solution

The fourth proportional to 134,230.40, 201,115.20 and 87,459.20 is: 131,038.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,230.40 : 201,115.20 = 87,459.20 : x
  2. Step 2: Convert to fraction form
    134,230.40/201,115.20 = 87,459.20/x
  3. Step 3: Cross multiply
    134,230.40x = 201,115.20 × 87,459.20
  4. Step 4: Simplify right side
    134,230.40x = 17,589,374,499.84
  5. Step 5: Solve for x
    x = 17,589,374,499.84/134,230.40
  6. Step 6: Final answer
    x = 131,038.68

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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.