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Finding the Fourth Proportional to 107,812.68, 148,680.59 and 85,205.68

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Solution

The fourth proportional to 107,812.68, 148,680.59 and 85,205.68 is: 117,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,812.68 : 148,680.59 = 85,205.68 : x
  2. Step 2: Convert to fraction form
    107,812.68/148,680.59 = 85,205.68/x
  3. Step 3: Cross multiply
    107,812.68x = 148,680.59 × 85,205.68
  4. Step 4: Simplify right side
    107,812.68x = 12,668,430,347.72
  5. Step 5: Solve for x
    x = 12,668,430,347.72/107,812.68
  6. Step 6: Final answer
    x = 117,504.09

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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.