Home / 151,224.73-208,710-86,719.21

Finding the Fourth Proportional to 151,224.73, 208,710 and 86,719.21

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Solution

The fourth proportional to 151,224.73, 208,710 and 86,719.21 is: 119,683.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,224.73 : 208,710 = 86,719.21 : x
  2. Step 2: Convert to fraction form
    151,224.73/208,710 = 86,719.21/x
  3. Step 3: Cross multiply
    151,224.73x = 208,710 × 86,719.21
  4. Step 4: Simplify right side
    151,224.73x = 18,099,166,319.10
  5. Step 5: Solve for x
    x = 18,099,166,319.10/151,224.73
  6. Step 6: Final answer
    x = 119,683.91

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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.