Home / 121,619.40-182,429.10-77,296.20

Finding the Fourth Proportional to 121,619.40, 182,429.10 and 77,296.20

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Solution

The fourth proportional to 121,619.40, 182,429.10 and 77,296.20 is: 115,944.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,619.40 : 182,429.10 = 77,296.20 : x
  2. Step 2: Convert to fraction form
    121,619.40/182,429.10 = 77,296.20/x
  3. Step 3: Cross multiply
    121,619.40x = 182,429.10 × 77,296.20
  4. Step 4: Simplify right side
    121,619.40x = 14,101,076,199.42
  5. Step 5: Solve for x
    x = 14,101,076,199.42/121,619.40
  6. Step 6: Final answer
    x = 115,944.30

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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.