Home / 120,325.16-165,940.98-77,839.40

Finding the Fourth Proportional to 120,325.16, 165,940.98 and 77,839.40

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Solution

The fourth proportional to 120,325.16, 165,940.98 and 77,839.40 is: 107,348.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,325.16 : 165,940.98 = 77,839.40 : x
  2. Step 2: Convert to fraction form
    120,325.16/165,940.98 = 77,839.40/x
  3. Step 3: Cross multiply
    120,325.16x = 165,940.98 × 77,839.40
  4. Step 4: Simplify right side
    120,325.16x = 12,916,746,318.61
  5. Step 5: Solve for x
    x = 12,916,746,318.61/120,325.16
  6. Step 6: Final answer
    x = 107,348.67

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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.