Home / 206,835.16-310,268.46-80,421.10

Finding the Fourth Proportional to 206,835.16, 310,268.46 and 80,421.10

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Solution

The fourth proportional to 206,835.16, 310,268.46 and 80,421.10 is: 120,637.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,835.16 : 310,268.46 = 80,421.10 : x
  2. Step 2: Convert to fraction form
    206,835.16/310,268.46 = 80,421.10/x
  3. Step 3: Cross multiply
    206,835.16x = 310,268.46 × 80,421.10
  4. Step 4: Simplify right side
    206,835.16x = 24,952,130,848.51
  5. Step 5: Solve for x
    x = 24,952,130,848.51/206,835.16
  6. Step 6: Final answer
    x = 120,637.76

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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.