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Finding the Fourth Proportional to 171,690.30, 257,535.45 and 53,360.70

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Solution

The fourth proportional to 171,690.30, 257,535.45 and 53,360.70 is: 80,041.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,690.30 : 257,535.45 = 53,360.70 : x
  2. Step 2: Convert to fraction form
    171,690.30/257,535.45 = 53,360.70/x
  3. Step 3: Cross multiply
    171,690.30x = 257,535.45 × 53,360.70
  4. Step 4: Simplify right side
    171,690.30x = 13,742,271,886.82
  5. Step 5: Solve for x
    x = 13,742,271,886.82/171,690.30
  6. Step 6: Final answer
    x = 80,041.05

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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.