Home / 261,638.31-392,467.04-72,113.81

Finding the Fourth Proportional to 261,638.31, 392,467.04 and 72,113.81

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Solution

The fourth proportional to 261,638.31, 392,467.04 and 72,113.81 is: 108,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,638.31 : 392,467.04 = 72,113.81 : x
  2. Step 2: Convert to fraction form
    261,638.31/392,467.04 = 72,113.81/x
  3. Step 3: Cross multiply
    261,638.31x = 392,467.04 × 72,113.81
  4. Step 4: Simplify right side
    261,638.31x = 28,302,291,501.34
  5. Step 5: Solve for x
    x = 28,302,291,501.34/261,638.31
  6. Step 6: Final answer
    x = 108,173.34

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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.