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Finding the Fourth Proportional to 104,572.72, 156,842.52 and 86,916.76

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Solution

The fourth proportional to 104,572.72, 156,842.52 and 86,916.76 is: 130,361.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,572.72 : 156,842.52 = 86,916.76 : x
  2. Step 2: Convert to fraction form
    104,572.72/156,842.52 = 86,916.76/x
  3. Step 3: Cross multiply
    104,572.72x = 156,842.52 × 86,916.76
  4. Step 4: Simplify right side
    104,572.72x = 13,632,243,668.64
  5. Step 5: Solve for x
    x = 13,632,243,668.64/104,572.72
  6. Step 6: Final answer
    x = 130,361.38

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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.