Home / 102,390.96-141,307.74-57,083.61

Finding the Fourth Proportional to 102,390.96, 141,307.74 and 57,083.61

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Solution

The fourth proportional to 102,390.96, 141,307.74 and 57,083.61 is: 78,779.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,390.96 : 141,307.74 = 57,083.61 : x
  2. Step 2: Convert to fraction form
    102,390.96/141,307.74 = 57,083.61/x
  3. Step 3: Cross multiply
    102,390.96x = 141,307.74 × 57,083.61
  4. Step 4: Simplify right side
    102,390.96x = 8,066,355,920.14
  5. Step 5: Solve for x
    x = 8,066,355,920.14/102,390.96
  6. Step 6: Final answer
    x = 78,779.96

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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.