Home / 123,579.60-185,369.40-76,923.60

Finding the Fourth Proportional to 123,579.60, 185,369.40 and 76,923.60

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Solution

The fourth proportional to 123,579.60, 185,369.40 and 76,923.60 is: 115,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,579.60 : 185,369.40 = 76,923.60 : x
  2. Step 2: Convert to fraction form
    123,579.60/185,369.40 = 76,923.60/x
  3. Step 3: Cross multiply
    123,579.60x = 185,369.40 × 76,923.60
  4. Step 4: Simplify right side
    123,579.60x = 14,259,281,577.84
  5. Step 5: Solve for x
    x = 14,259,281,577.84/123,579.60
  6. Step 6: Final answer
    x = 115,385.40

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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.