Home / 153,141.20-211,319.88-86,071.76

Finding the Fourth Proportional to 153,141.20, 211,319.88 and 86,071.76

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Solution

The fourth proportional to 153,141.20, 211,319.88 and 86,071.76 is: 118,770.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,141.20 : 211,319.88 = 86,071.76 : x
  2. Step 2: Convert to fraction form
    153,141.20/211,319.88 = 86,071.76/x
  3. Step 3: Cross multiply
    153,141.20x = 211,319.88 × 86,071.76
  4. Step 4: Simplify right side
    153,141.20x = 18,188,673,994.59
  5. Step 5: Solve for x
    x = 18,188,673,994.59/153,141.20
  6. Step 6: Final answer
    x = 118,770.61

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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.