Home / 90,633.60-135,950.40-69,614.10

Finding the Fourth Proportional to 90,633.60, 135,950.40 and 69,614.10

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Solution

The fourth proportional to 90,633.60, 135,950.40 and 69,614.10 is: 104,421.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.60 : 135,950.40 = 69,614.10 : x
  2. Step 2: Convert to fraction form
    90,633.60/135,950.40 = 69,614.10/x
  3. Step 3: Cross multiply
    90,633.60x = 135,950.40 × 69,614.10
  4. Step 4: Simplify right side
    90,633.60x = 9,464,064,740.64
  5. Step 5: Solve for x
    x = 9,464,064,740.64/90,633.60
  6. Step 6: Final answer
    x = 104,421.15

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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.