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Finding the Fourth Proportional to 119,374.95, 164,740.55 and 65,661.38

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Solution

The fourth proportional to 119,374.95, 164,740.55 and 65,661.38 is: 90,614.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,374.95 : 164,740.55 = 65,661.38 : x
  2. Step 2: Convert to fraction form
    119,374.95/164,740.55 = 65,661.38/x
  3. Step 3: Cross multiply
    119,374.95x = 164,740.55 × 65,661.38
  4. Step 4: Simplify right side
    119,374.95x = 10,817,091,854.96
  5. Step 5: Solve for x
    x = 10,817,091,854.96/119,374.95
  6. Step 6: Final answer
    x = 90,614.42

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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.