Home / 95,430.40-143,145.60-86,682.40

Finding the Fourth Proportional to 95,430.40, 143,145.60 and 86,682.40

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Solution

The fourth proportional to 95,430.40, 143,145.60 and 86,682.40 is: 130,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,430.40 : 143,145.60 = 86,682.40 : x
  2. Step 2: Convert to fraction form
    95,430.40/143,145.60 = 86,682.40/x
  3. Step 3: Cross multiply
    95,430.40x = 143,145.60 × 86,682.40
  4. Step 4: Simplify right side
    95,430.40x = 12,408,204,157.44
  5. Step 5: Solve for x
    x = 12,408,204,157.44/95,430.40
  6. Step 6: Final answer
    x = 130,023.60

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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.