Home / 138,637.08-207,933.93-45,142.20

Finding the Fourth Proportional to 138,637.08, 207,933.93 and 45,142.20

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Solution

The fourth proportional to 138,637.08, 207,933.93 and 45,142.20 is: 67,706.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,637.08 : 207,933.93 = 45,142.20 : x
  2. Step 2: Convert to fraction form
    138,637.08/207,933.93 = 45,142.20/x
  3. Step 3: Cross multiply
    138,637.08x = 207,933.93 × 45,142.20
  4. Step 4: Simplify right side
    138,637.08x = 9,386,595,054.85
  5. Step 5: Solve for x
    x = 9,386,595,054.85/138,637.08
  6. Step 6: Final answer
    x = 67,706.24

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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.