Home / 90,292.12-134,889.10-58,442.72

Finding the Fourth Proportional to 90,292.12, 134,889.10 and 58,442.72

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Solution

The fourth proportional to 90,292.12, 134,889.10 and 58,442.72 is: 87,308.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,292.12 : 134,889.10 = 58,442.72 : x
  2. Step 2: Convert to fraction form
    90,292.12/134,889.10 = 58,442.72/x
  3. Step 3: Cross multiply
    90,292.12x = 134,889.10 × 58,442.72
  4. Step 4: Simplify right side
    90,292.12x = 7,883,285,081.80
  5. Step 5: Solve for x
    x = 7,883,285,081.80/90,292.12
  6. Step 6: Final answer
    x = 87,308.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.