Home / 161,166.90-222,411.64-100,772.55

Finding the Fourth Proportional to 161,166.90, 222,411.64 and 100,772.55

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Solution

The fourth proportional to 161,166.90, 222,411.64 and 100,772.55 is: 139,066.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,166.90 : 222,411.64 = 100,772.55 : x
  2. Step 2: Convert to fraction form
    161,166.90/222,411.64 = 100,772.55/x
  3. Step 3: Cross multiply
    161,166.90x = 222,411.64 × 100,772.55
  4. Step 4: Simplify right side
    161,166.90x = 22,412,988,112.48
  5. Step 5: Solve for x
    x = 22,412,988,112.48/161,166.90
  6. Step 6: Final answer
    x = 139,066.94

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1.5x scale

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.