Home / 137,026.04-189,090.06-80,443.64

Finding the Fourth Proportional to 137,026.04, 189,090.06 and 80,443.64

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Solution

The fourth proportional to 137,026.04, 189,090.06 and 80,443.64 is: 111,008.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,026.04 : 189,090.06 = 80,443.64 : x
  2. Step 2: Convert to fraction form
    137,026.04/189,090.06 = 80,443.64/x
  3. Step 3: Cross multiply
    137,026.04x = 189,090.06 × 80,443.64
  4. Step 4: Simplify right side
    137,026.04x = 15,211,092,714.22
  5. Step 5: Solve for x
    x = 15,211,092,714.22/137,026.04
  6. Step 6: Final answer
    x = 111,008.77

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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.