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Finding the Fourth Proportional to 178,009.06, 245,643 and 97,421

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Solution

The fourth proportional to 178,009.06, 245,643 and 97,421 is: 134,435.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,009.06 : 245,643 = 97,421 : x
  2. Step 2: Convert to fraction form
    178,009.06/245,643 = 97,421/x
  3. Step 3: Cross multiply
    178,009.06x = 245,643 × 97,421
  4. Step 4: Simplify right side
    178,009.06x = 23,930,786,703
  5. Step 5: Solve for x
    x = 23,930,786,703/178,009.06
  6. Step 6: Final answer
    x = 134,435.78

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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.