Home / 151,431.90-208,973.21-83,455.17

Finding the Fourth Proportional to 151,431.90, 208,973.21 and 83,455.17

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Solution

The fourth proportional to 151,431.90, 208,973.21 and 83,455.17 is: 115,166.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,431.90 : 208,973.21 = 83,455.17 : x
  2. Step 2: Convert to fraction form
    151,431.90/208,973.21 = 83,455.17/x
  3. Step 3: Cross multiply
    151,431.90x = 208,973.21 × 83,455.17
  4. Step 4: Simplify right side
    151,431.90x = 17,439,894,348.72
  5. Step 5: Solve for x
    x = 17,439,894,348.72/151,431.90
  6. Step 6: Final answer
    x = 115,166.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.