Home / 137,730.24-190,036.80-81,146.88

Finding the Fourth Proportional to 137,730.24, 190,036.80 and 81,146.88

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Solution

The fourth proportional to 137,730.24, 190,036.80 and 81,146.88 is: 111,964.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,730.24 : 190,036.80 = 81,146.88 : x
  2. Step 2: Convert to fraction form
    137,730.24/190,036.80 = 81,146.88/x
  3. Step 3: Cross multiply
    137,730.24x = 190,036.80 × 81,146.88
  4. Step 4: Simplify right side
    137,730.24x = 15,420,893,405.18
  5. Step 5: Solve for x
    x = 15,420,893,405.18/137,730.24
  6. Step 6: Final answer
    x = 111,964.47

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1.5x scale

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.