Home / 118,394.19-177,307.58-86,287.21

Finding the Fourth Proportional to 118,394.19, 177,307.58 and 86,287.21

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Solution

The fourth proportional to 118,394.19, 177,307.58 and 86,287.21 is: 129,224.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,394.19 : 177,307.58 = 86,287.21 : x
  2. Step 2: Convert to fraction form
    118,394.19/177,307.58 = 86,287.21/x
  3. Step 3: Cross multiply
    118,394.19x = 177,307.58 × 86,287.21
  4. Step 4: Simplify right side
    118,394.19x = 15,299,376,162.50
  5. Step 5: Solve for x
    x = 15,299,376,162.50/118,394.19
  6. Step 6: Final answer
    x = 129,224.05

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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.