Home / 90,659.04-135,873.40-51,238.32

Finding the Fourth Proportional to 90,659.04, 135,873.40 and 51,238.32

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Solution

The fourth proportional to 90,659.04, 135,873.40 and 51,238.32 is: 76,792.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,659.04 : 135,873.40 = 51,238.32 : x
  2. Step 2: Convert to fraction form
    90,659.04/135,873.40 = 51,238.32/x
  3. Step 3: Cross multiply
    90,659.04x = 135,873.40 × 51,238.32
  4. Step 4: Simplify right side
    90,659.04x = 6,961,924,748.69
  5. Step 5: Solve for x
    x = 6,961,924,748.69/90,659.04
  6. Step 6: Final answer
    x = 76,792.39

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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.