Home / 103,619.64-142,995.32-61,180.90

Finding the Fourth Proportional to 103,619.64, 142,995.32 and 61,180.90

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Solution

The fourth proportional to 103,619.64, 142,995.32 and 61,180.90 is: 84,429.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.64 : 142,995.32 = 61,180.90 : x
  2. Step 2: Convert to fraction form
    103,619.64/142,995.32 = 61,180.90/x
  3. Step 3: Cross multiply
    103,619.64x = 142,995.32 × 61,180.90
  4. Step 4: Simplify right side
    103,619.64x = 8,748,582,373.39
  5. Step 5: Solve for x
    x = 8,748,582,373.39/103,619.64
  6. Step 6: Final answer
    x = 84,429.77

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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.