Home / 145,058.64-200,186-84,619.68

Finding the Fourth Proportional to 145,058.64, 200,186 and 84,619.68

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Solution

The fourth proportional to 145,058.64, 200,186 and 84,619.68 is: 116,778.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,058.64 : 200,186 = 84,619.68 : x
  2. Step 2: Convert to fraction form
    145,058.64/200,186 = 84,619.68/x
  3. Step 3: Cross multiply
    145,058.64x = 200,186 × 84,619.68
  4. Step 4: Simplify right side
    145,058.64x = 16,939,675,260.48
  5. Step 5: Solve for x
    x = 16,939,675,260.48/145,058.64
  6. Step 6: Final answer
    x = 116,778.12

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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.