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Finding the Fourth Proportional to 124,813.67, 172,215.72 and 73,829.21

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Solution

The fourth proportional to 124,813.67, 172,215.72 and 73,829.21 is: 101,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,813.67 : 172,215.72 = 73,829.21 : x
  2. Step 2: Convert to fraction form
    124,813.67/172,215.72 = 73,829.21/x
  3. Step 3: Cross multiply
    124,813.67x = 172,215.72 × 73,829.21
  4. Step 4: Simplify right side
    124,813.67x = 12,714,549,696.10
  5. Step 5: Solve for x
    x = 12,714,549,696.10/124,813.67
  6. Step 6: Final answer
    x = 101,868.25

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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.