Home / 90,719.39-136,102.10-64,117.72

Finding the Fourth Proportional to 90,719.39, 136,102.10 and 64,117.72

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Solution

The fourth proportional to 90,719.39, 136,102.10 and 64,117.72 is: 96,192.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,719.39 : 136,102.10 = 64,117.72 : x
  2. Step 2: Convert to fraction form
    90,719.39/136,102.10 = 64,117.72/x
  3. Step 3: Cross multiply
    90,719.39x = 136,102.10 × 64,117.72
  4. Step 4: Simplify right side
    90,719.39x = 8,726,556,188.75
  5. Step 5: Solve for x
    x = 8,726,556,188.75/90,719.39
  6. Step 6: Final answer
    x = 96,192.84

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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.