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Finding the Fourth Proportional to 161,216, 222,460.40 and 93,222.72

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Solution

The fourth proportional to 161,216, 222,460.40 and 93,222.72 is: 128,637.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,216 : 222,460.40 = 93,222.72 : x
  2. Step 2: Convert to fraction form
    161,216/222,460.40 = 93,222.72/x
  3. Step 3: Cross multiply
    161,216x = 222,460.40 × 93,222.72
  4. Step 4: Simplify right side
    161,216x = 20,738,363,580.29
  5. Step 5: Solve for x
    x = 20,738,363,580.29/161,216
  6. Step 6: Final answer
    x = 128,637.13

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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.