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Finding the Fourth Proportional to 169,461.72, 253,882.76 and 79,339.10

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Solution

The fourth proportional to 169,461.72, 253,882.76 and 79,339.10 is: 118,863.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,461.72 : 253,882.76 = 79,339.10 : x
  2. Step 2: Convert to fraction form
    169,461.72/253,882.76 = 79,339.10/x
  3. Step 3: Cross multiply
    169,461.72x = 253,882.76 × 79,339.10
  4. Step 4: Simplify right side
    169,461.72x = 20,142,828,017.81
  5. Step 5: Solve for x
    x = 20,142,828,017.81/169,461.72
  6. Step 6: Final answer
    x = 118,863.59

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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.