Home / 103,464.64-142,835.20-80,443.52

Finding the Fourth Proportional to 103,464.64, 142,835.20 and 80,443.52

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Solution

The fourth proportional to 103,464.64, 142,835.20 and 80,443.52 is: 111,054.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,464.64 : 142,835.20 = 80,443.52 : x
  2. Step 2: Convert to fraction form
    103,464.64/142,835.20 = 80,443.52/x
  3. Step 3: Cross multiply
    103,464.64x = 142,835.20 × 80,443.52
  4. Step 4: Simplify right side
    103,464.64x = 11,490,166,267.90
  5. Step 5: Solve for x
    x = 11,490,166,267.90/103,464.64
  6. Step 6: Final answer
    x = 111,054.04

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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.