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Finding the Fourth Proportional to 171,492.90, 257,239.35 and 53,176.20

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Solution

The fourth proportional to 171,492.90, 257,239.35 and 53,176.20 is: 79,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,492.90 : 257,239.35 = 53,176.20 : x
  2. Step 2: Convert to fraction form
    171,492.90/257,239.35 = 53,176.20/x
  3. Step 3: Cross multiply
    171,492.90x = 257,239.35 × 53,176.20
  4. Step 4: Simplify right side
    171,492.90x = 13,679,011,123.47
  5. Step 5: Solve for x
    x = 13,679,011,123.47/171,492.90
  6. Step 6: Final answer
    x = 79,764.30

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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.