Home / 103,902.78-143,386.50-56,156.04

Finding the Fourth Proportional to 103,902.78, 143,386.50 and 56,156.04

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Solution

The fourth proportional to 103,902.78, 143,386.50 and 56,156.04 is: 77,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,902.78 : 143,386.50 = 56,156.04 : x
  2. Step 2: Convert to fraction form
    103,902.78/143,386.50 = 56,156.04/x
  3. Step 3: Cross multiply
    103,902.78x = 143,386.50 × 56,156.04
  4. Step 4: Simplify right side
    103,902.78x = 8,052,018,029.46
  5. Step 5: Solve for x
    x = 8,052,018,029.46/103,902.78
  6. Step 6: Final answer
    x = 77,495.69

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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.