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Finding the Fourth Proportional to 168,951.66, 253,483.74 and 56,643

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Solution

The fourth proportional to 168,951.66, 253,483.74 and 56,643 is: 84,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,951.66 : 253,483.74 = 56,643 : x
  2. Step 2: Convert to fraction form
    168,951.66/253,483.74 = 56,643/x
  3. Step 3: Cross multiply
    168,951.66x = 253,483.74 × 56,643
  4. Step 4: Simplify right side
    168,951.66x = 14,358,079,484.82
  5. Step 5: Solve for x
    x = 14,358,079,484.82/168,951.66
  6. Step 6: Final answer
    x = 84,983.36

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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.