Home / 258,498.18-387,747.39-118,158.39

Finding the Fourth Proportional to 258,498.18, 387,747.39 and 118,158.39

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Solution

The fourth proportional to 258,498.18, 387,747.39 and 118,158.39 is: 177,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,498.18 : 387,747.39 = 118,158.39 : x
  2. Step 2: Convert to fraction form
    258,498.18/387,747.39 = 118,158.39/x
  3. Step 3: Cross multiply
    258,498.18x = 387,747.39 × 118,158.39
  4. Step 4: Simplify right side
    258,498.18x = 45,815,607,329.10
  5. Step 5: Solve for x
    x = 45,815,607,329.10/258,498.18
  6. Step 6: Final answer
    x = 177,237.64

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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.