Home / 129,953.82-179,346.69-103,316.16

Finding the Fourth Proportional to 129,953.82, 179,346.69 and 103,316.16

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Solution

The fourth proportional to 129,953.82, 179,346.69 and 103,316.16 is: 142,584.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,953.82 : 179,346.69 = 103,316.16 : x
  2. Step 2: Convert to fraction form
    129,953.82/179,346.69 = 103,316.16/x
  3. Step 3: Cross multiply
    129,953.82x = 179,346.69 × 103,316.16
  4. Step 4: Simplify right side
    129,953.82x = 18,529,411,319.51
  5. Step 5: Solve for x
    x = 18,529,411,319.51/129,953.82
  6. Step 6: Final answer
    x = 142,584.58

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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.