Home / 137,347.12-189,575.67-128,983.06

Finding the Fourth Proportional to 137,347.12, 189,575.67 and 128,983.06

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Solution

The fourth proportional to 137,347.12, 189,575.67 and 128,983.06 is: 178,031.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,347.12 : 189,575.67 = 128,983.06 : x
  2. Step 2: Convert to fraction form
    137,347.12/189,575.67 = 128,983.06/x
  3. Step 3: Cross multiply
    137,347.12x = 189,575.67 × 128,983.06
  4. Step 4: Simplify right side
    137,347.12x = 24,452,050,018.15
  5. Step 5: Solve for x
    x = 24,452,050,018.15/137,347.12
  6. Step 6: Final answer
    x = 178,031.04

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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.