Home / 120,931.04-166,724.52-99,339.68

Finding the Fourth Proportional to 120,931.04, 166,724.52 and 99,339.68

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Solution

The fourth proportional to 120,931.04, 166,724.52 and 99,339.68 is: 136,957.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,931.04 : 166,724.52 = 99,339.68 : x
  2. Step 2: Convert to fraction form
    120,931.04/166,724.52 = 99,339.68/x
  3. Step 3: Cross multiply
    120,931.04x = 166,724.52 × 99,339.68
  4. Step 4: Simplify right side
    120,931.04x = 16,562,360,464.95
  5. Step 5: Solve for x
    x = 16,562,360,464.95/120,931.04
  6. Step 6: Final answer
    x = 136,957.07

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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.