Home / 161,355.90-222,669.99-89,731.74

Finding the Fourth Proportional to 161,355.90, 222,669.99 and 89,731.74

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Solution

The fourth proportional to 161,355.90, 222,669.99 and 89,731.74 is: 123,829.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,355.90 : 222,669.99 = 89,731.74 : x
  2. Step 2: Convert to fraction form
    161,355.90/222,669.99 = 89,731.74/x
  3. Step 3: Cross multiply
    161,355.90x = 222,669.99 × 89,731.74
  4. Step 4: Simplify right side
    161,355.90x = 19,980,565,648.48
  5. Step 5: Solve for x
    x = 19,980,565,648.48/161,355.90
  6. Step 6: Final answer
    x = 123,829.16

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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.