Home / 113,429.20-170,143.80-77,999.80

Finding the Fourth Proportional to 113,429.20, 170,143.80 and 77,999.80

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Solution

The fourth proportional to 113,429.20, 170,143.80 and 77,999.80 is: 116,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,429.20 : 170,143.80 = 77,999.80 : x
  2. Step 2: Convert to fraction form
    113,429.20/170,143.80 = 77,999.80/x
  3. Step 3: Cross multiply
    113,429.20x = 170,143.80 × 77,999.80
  4. Step 4: Simplify right side
    113,429.20x = 13,271,182,371.24
  5. Step 5: Solve for x
    x = 13,271,182,371.24/113,429.20
  6. Step 6: Final answer
    x = 116,999.70

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1.5x scale

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.