Home / 140,638.79-210,974.58-56,428.35

Finding the Fourth Proportional to 140,638.79, 210,974.58 and 56,428.35

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Solution

The fourth proportional to 140,638.79, 210,974.58 and 56,428.35 is: 84,649.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,638.79 : 210,974.58 = 56,428.35 : x
  2. Step 2: Convert to fraction form
    140,638.79/210,974.58 = 56,428.35/x
  3. Step 3: Cross multiply
    140,638.79x = 210,974.58 × 56,428.35
  4. Step 4: Simplify right side
    140,638.79x = 11,904,947,441.34
  5. Step 5: Solve for x
    x = 11,904,947,441.34/140,638.79
  6. Step 6: Final answer
    x = 84,649.11

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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.