Home / 138,705.42-208,038.96-59,809.38

Finding the Fourth Proportional to 138,705.42, 208,038.96 and 59,809.38

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Solution

The fourth proportional to 138,705.42, 208,038.96 and 59,809.38 is: 89,705.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,705.42 : 208,038.96 = 59,809.38 : x
  2. Step 2: Convert to fraction form
    138,705.42/208,038.96 = 59,809.38/x
  3. Step 3: Cross multiply
    138,705.42x = 208,038.96 × 59,809.38
  4. Step 4: Simplify right side
    138,705.42x = 12,442,681,213.44
  5. Step 5: Solve for x
    x = 12,442,681,213.44/138,705.42
  6. Step 6: Final answer
    x = 89,705.80

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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.