Home / 97,431.20-145,855.20-86,933.60

Finding the Fourth Proportional to 97,431.20, 145,855.20 and 86,933.60

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Solution

The fourth proportional to 97,431.20, 145,855.20 and 86,933.60 is: 130,140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,431.20 : 145,855.20 = 86,933.60 : x
  2. Step 2: Convert to fraction form
    97,431.20/145,855.20 = 86,933.60/x
  3. Step 3: Cross multiply
    97,431.20x = 145,855.20 × 86,933.60
  4. Step 4: Simplify right side
    97,431.20x = 12,679,717,614.72
  5. Step 5: Solve for x
    x = 12,679,717,614.72/97,431.20
  6. Step 6: Final answer
    x = 130,140.22

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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.