Home / 138,869.35-208,271.52-39,039.08

Finding the Fourth Proportional to 138,869.35, 208,271.52 and 39,039.08

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Solution

The fourth proportional to 138,869.35, 208,271.52 and 39,039.08 is: 58,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,869.35 : 208,271.52 = 39,039.08 : x
  2. Step 2: Convert to fraction form
    138,869.35/208,271.52 = 39,039.08/x
  3. Step 3: Cross multiply
    138,869.35x = 208,271.52 × 39,039.08
  4. Step 4: Simplify right side
    138,869.35x = 8,130,727,489.64
  5. Step 5: Solve for x
    x = 8,130,727,489.64/138,869.35
  6. Step 6: Final answer
    x = 58,549.48

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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.