Home / 138,923.40-208,077.90-55,774.60

Finding the Fourth Proportional to 138,923.40, 208,077.90 and 55,774.60

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Solution

The fourth proportional to 138,923.40, 208,077.90 and 55,774.60 is: 83,538.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,923.40 : 208,077.90 = 55,774.60 : x
  2. Step 2: Convert to fraction form
    138,923.40/208,077.90 = 55,774.60/x
  3. Step 3: Cross multiply
    138,923.40x = 208,077.90 × 55,774.60
  4. Step 4: Simplify right side
    138,923.40x = 11,605,461,641.34
  5. Step 5: Solve for x
    x = 11,605,461,641.34/138,923.40
  6. Step 6: Final answer
    x = 83,538.57

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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.