Home / 141,409.49-195,140.10-77,746.80

Finding the Fourth Proportional to 141,409.49, 195,140.10 and 77,746.80

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Solution

The fourth proportional to 141,409.49, 195,140.10 and 77,746.80 is: 107,287.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,409.49 : 195,140.10 = 77,746.80 : x
  2. Step 2: Convert to fraction form
    141,409.49/195,140.10 = 77,746.80/x
  3. Step 3: Cross multiply
    141,409.49x = 195,140.10 × 77,746.80
  4. Step 4: Simplify right side
    141,409.49x = 15,171,518,326.68
  5. Step 5: Solve for x
    x = 15,171,518,326.68/141,409.49
  6. Step 6: Final answer
    x = 107,287.84

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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.