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Finding the Fourth Proportional to 119,386.42, 164,750.56 and 65,670.29

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Solution

The fourth proportional to 119,386.42, 164,750.56 and 65,670.29 is: 90,623.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,386.42 : 164,750.56 = 65,670.29 : x
  2. Step 2: Convert to fraction form
    119,386.42/164,750.56 = 65,670.29/x
  3. Step 3: Cross multiply
    119,386.42x = 164,750.56 × 65,670.29
  4. Step 4: Simplify right side
    119,386.42x = 10,819,217,609.47
  5. Step 5: Solve for x
    x = 10,819,217,609.47/119,386.42
  6. Step 6: Final answer
    x = 90,623.52

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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.