Home / 135,082.08-202,681.44-72,740.16

Finding the Fourth Proportional to 135,082.08, 202,681.44 and 72,740.16

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Solution

The fourth proportional to 135,082.08, 202,681.44 and 72,740.16 is: 109,141.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,082.08 : 202,681.44 = 72,740.16 : x
  2. Step 2: Convert to fraction form
    135,082.08/202,681.44 = 72,740.16/x
  3. Step 3: Cross multiply
    135,082.08x = 202,681.44 × 72,740.16
  4. Step 4: Simplify right side
    135,082.08x = 14,743,080,374.63
  5. Step 5: Solve for x
    x = 14,743,080,374.63/135,082.08
  6. Step 6: Final answer
    x = 109,141.64

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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.