Home / 261,143.12-391,667.52-118,955.36

Finding the Fourth Proportional to 261,143.12, 391,667.52 and 118,955.36

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Solution

The fourth proportional to 261,143.12, 391,667.52 and 118,955.36 is: 178,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,143.12 : 391,667.52 = 118,955.36 : x
  2. Step 2: Convert to fraction form
    261,143.12/391,667.52 = 118,955.36/x
  3. Step 3: Cross multiply
    261,143.12x = 391,667.52 × 118,955.36
  4. Step 4: Simplify right side
    261,143.12x = 46,590,950,841.91
  5. Step 5: Solve for x
    x = 46,590,950,841.91/261,143.12
  6. Step 6: Final answer
    x = 178,411.56

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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.