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Finding the Fourth Proportional to 119,291.74, 164,660.92 and 76,386.76

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Solution

The fourth proportional to 119,291.74, 164,660.92 and 76,386.76 is: 105,438.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,291.74 : 164,660.92 = 76,386.76 : x
  2. Step 2: Convert to fraction form
    119,291.74/164,660.92 = 76,386.76/x
  3. Step 3: Cross multiply
    119,291.74x = 164,660.92 × 76,386.76
  4. Step 4: Simplify right side
    119,291.74x = 12,577,913,574.80
  5. Step 5: Solve for x
    x = 12,577,913,574.80/119,291.74
  6. Step 6: Final answer
    x = 105,438.26

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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.