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Finding the Fourth Proportional to 89,742.48, 133,554.47 and 86,752.67

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Solution

The fourth proportional to 89,742.48, 133,554.47 and 86,752.67 is: 129,105.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,742.48 : 133,554.47 = 86,752.67 : x
  2. Step 2: Convert to fraction form
    89,742.48/133,554.47 = 86,752.67/x
  3. Step 3: Cross multiply
    89,742.48x = 133,554.47 × 86,752.67
  4. Step 4: Simplify right side
    89,742.48x = 11,586,207,000.63
  5. Step 5: Solve for x
    x = 11,586,207,000.63/89,742.48
  6. Step 6: Final answer
    x = 129,105.04

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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.