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Finding the Fourth Proportional to 210,910.94, 291,051.73 and 124,871.02

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Solution

The fourth proportional to 210,910.94, 291,051.73 and 124,871.02 is: 172,318.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,910.94 : 291,051.73 = 124,871.02 : x
  2. Step 2: Convert to fraction form
    210,910.94/291,051.73 = 124,871.02/x
  3. Step 3: Cross multiply
    210,910.94x = 291,051.73 × 124,871.02
  4. Step 4: Simplify right side
    210,910.94x = 36,343,925,826.32
  5. Step 5: Solve for x
    x = 36,343,925,826.32/210,910.94
  6. Step 6: Final answer
    x = 172,318.83

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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.