Home / 127,981.40-192,068.10-65,619.80

Finding the Fourth Proportional to 127,981.40, 192,068.10 and 65,619.80

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Solution

The fourth proportional to 127,981.40, 192,068.10 and 65,619.80 is: 98,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,981.40 : 192,068.10 = 65,619.80 : x
  2. Step 2: Convert to fraction form
    127,981.40/192,068.10 = 65,619.80/x
  3. Step 3: Cross multiply
    127,981.40x = 192,068.10 × 65,619.80
  4. Step 4: Simplify right side
    127,981.40x = 12,603,470,308.38
  5. Step 5: Solve for x
    x = 12,603,470,308.38/127,981.40
  6. Step 6: Final answer
    x = 98,478.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.