Home / 109,235.20-150,654.72-64,480

Finding the Fourth Proportional to 109,235.20, 150,654.72 and 64,480

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Solution

The fourth proportional to 109,235.20, 150,654.72 and 64,480 is: 88,929.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,235.20 : 150,654.72 = 64,480 : x
  2. Step 2: Convert to fraction form
    109,235.20/150,654.72 = 64,480/x
  3. Step 3: Cross multiply
    109,235.20x = 150,654.72 × 64,480
  4. Step 4: Simplify right side
    109,235.20x = 9,714,216,345.60
  5. Step 5: Solve for x
    x = 9,714,216,345.60/109,235.20
  6. Step 6: Final answer
    x = 88,929.36

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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.