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Finding the Fourth Proportional to 93,695.54, 129,212.21 and 74,638.67

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Solution

The fourth proportional to 93,695.54, 129,212.21 and 74,638.67 is: 102,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,695.54 : 129,212.21 = 74,638.67 : x
  2. Step 2: Convert to fraction form
    93,695.54/129,212.21 = 74,638.67/x
  3. Step 3: Cross multiply
    93,695.54x = 129,212.21 × 74,638.67
  4. Step 4: Simplify right side
    93,695.54x = 9,644,227,042.70
  5. Step 5: Solve for x
    x = 9,644,227,042.70/93,695.54
  6. Step 6: Final answer
    x = 102,931.55

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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.