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Finding the Fourth Proportional to 124,814.67, 172,217.10 and 73,830.21

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Solution

The fourth proportional to 124,814.67, 172,217.10 and 73,830.21 is: 101,869.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,814.67 : 172,217.10 = 73,830.21 : x
  2. Step 2: Convert to fraction form
    124,814.67/172,217.10 = 73,830.21/x
  3. Step 3: Cross multiply
    124,814.67x = 172,217.10 × 73,830.21
  4. Step 4: Simplify right side
    124,814.67x = 12,714,824,658.59
  5. Step 5: Solve for x
    x = 12,714,824,658.59/124,814.67
  6. Step 6: Final answer
    x = 101,869.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.