Home / 138,877.02-208,325.32-68,737.50

Finding the Fourth Proportional to 138,877.02, 208,325.32 and 68,737.50

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Solution

The fourth proportional to 138,877.02, 208,325.32 and 68,737.50 is: 103,111.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,877.02 : 208,325.32 = 68,737.50 : x
  2. Step 2: Convert to fraction form
    138,877.02/208,325.32 = 68,737.50/x
  3. Step 3: Cross multiply
    138,877.02x = 208,325.32 × 68,737.50
  4. Step 4: Simplify right side
    138,877.02x = 14,319,761,511.66
  5. Step 5: Solve for x
    x = 14,319,761,511.66/138,877.02
  6. Step 6: Final answer
    x = 103,111.09

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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.