Home / 153,653.13-211,965.93-102,678.41

Finding the Fourth Proportional to 153,653.13, 211,965.93 and 102,678.41

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Solution

The fourth proportional to 153,653.13, 211,965.93 and 102,678.41 is: 141,645.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,653.13 : 211,965.93 = 102,678.41 : x
  2. Step 2: Convert to fraction form
    153,653.13/211,965.93 = 102,678.41/x
  3. Step 3: Cross multiply
    153,653.13x = 211,965.93 × 102,678.41
  4. Step 4: Simplify right side
    153,653.13x = 21,764,325,196.49
  5. Step 5: Solve for x
    x = 21,764,325,196.49/153,653.13
  6. Step 6: Final answer
    x = 141,645.83

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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.