Home / 122,277.60-168,778.08-72,005.76

Finding the Fourth Proportional to 122,277.60, 168,778.08 and 72,005.76

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Solution

The fourth proportional to 122,277.60, 168,778.08 and 72,005.76 is: 99,388.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,277.60 : 168,778.08 = 72,005.76 : x
  2. Step 2: Convert to fraction form
    122,277.60/168,778.08 = 72,005.76/x
  3. Step 3: Cross multiply
    122,277.60x = 168,778.08 × 72,005.76
  4. Step 4: Simplify right side
    122,277.60x = 12,152,993,921.74
  5. Step 5: Solve for x
    x = 12,152,993,921.74/122,277.60
  6. Step 6: Final answer
    x = 99,388.55

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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.