Home / 112,871.68-169,307.42-28,638.16

Finding the Fourth Proportional to 112,871.68, 169,307.42 and 28,638.16

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Solution

The fourth proportional to 112,871.68, 169,307.42 and 28,638.16 is: 42,957.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,871.68 : 169,307.42 = 28,638.16 : x
  2. Step 2: Convert to fraction form
    112,871.68/169,307.42 = 28,638.16/x
  3. Step 3: Cross multiply
    112,871.68x = 169,307.42 × 28,638.16
  4. Step 4: Simplify right side
    112,871.68x = 4,848,652,416.69
  5. Step 5: Solve for x
    x = 4,848,652,416.69/112,871.68
  6. Step 6: Final answer
    x = 42,957.21

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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.