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Finding the Fourth Proportional to 119,888.40, 165,450.00 and 65,443.80

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Solution

The fourth proportional to 119,888.40, 165,450.00 and 65,443.80 is: 90,314.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,888.40 : 165,450.00 = 65,443.80 : x
  2. Step 2: Convert to fraction form
    119,888.40/165,450.00 = 65,443.80/x
  3. Step 3: Cross multiply
    119,888.40x = 165,450.00 × 65,443.80
  4. Step 4: Simplify right side
    119,888.40x = 10,827,676,145.46
  5. Step 5: Solve for x
    x = 10,827,676,145.46/119,888.40
  6. Step 6: Final answer
    x = 90,314.63

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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.