Home / 126,126.15-189,183.75-31,354.35

Finding the Fourth Proportional to 126,126.15, 189,183.75 and 31,354.35

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Solution

The fourth proportional to 126,126.15, 189,183.75 and 31,354.35 is: 47,030.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,126.15 : 189,183.75 = 31,354.35 : x
  2. Step 2: Convert to fraction form
    126,126.15/189,183.75 = 31,354.35/x
  3. Step 3: Cross multiply
    126,126.15x = 189,183.75 × 31,354.35
  4. Step 4: Simplify right side
    126,126.15x = 5,931,732,565.89
  5. Step 5: Solve for x
    x = 5,931,732,565.89/126,126.15
  6. Step 6: Final answer
    x = 47,030.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.