Home / 102,640.31-141,594.45-64,380.67

Finding the Fourth Proportional to 102,640.31, 141,594.45 and 64,380.67

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Solution

The fourth proportional to 102,640.31, 141,594.45 and 64,380.67 is: 88,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,640.31 : 141,594.45 = 64,380.67 : x
  2. Step 2: Convert to fraction form
    102,640.31/141,594.45 = 64,380.67/x
  3. Step 3: Cross multiply
    102,640.31x = 141,594.45 × 64,380.67
  4. Step 4: Simplify right side
    102,640.31x = 9,115,946,303.55
  5. Step 5: Solve for x
    x = 9,115,946,303.55/102,640.31
  6. Step 6: Final answer
    x = 88,814.48

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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.