Home / 138,865.02-208,307.25-68,725.50

Finding the Fourth Proportional to 138,865.02, 208,307.25 and 68,725.50

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Solution

The fourth proportional to 138,865.02, 208,307.25 and 68,725.50 is: 103,093.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,865.02 : 208,307.25 = 68,725.50 : x
  2. Step 2: Convert to fraction form
    138,865.02/208,307.25 = 68,725.50/x
  3. Step 3: Cross multiply
    138,865.02x = 208,307.25 × 68,725.50
  4. Step 4: Simplify right side
    138,865.02x = 14,316,019,909.88
  5. Step 5: Solve for x
    x = 14,316,019,909.88/138,865.02
  6. Step 6: Final answer
    x = 103,093.06

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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.