Home / 126,113.28-189,038.40-47,193.12

Finding the Fourth Proportional to 126,113.28, 189,038.40 and 47,193.12

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Solution

The fourth proportional to 126,113.28, 189,038.40 and 47,193.12 is: 70,740.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,113.28 : 189,038.40 = 47,193.12 : x
  2. Step 2: Convert to fraction form
    126,113.28/189,038.40 = 47,193.12/x
  3. Step 3: Cross multiply
    126,113.28x = 189,038.40 × 47,193.12
  4. Step 4: Simplify right side
    126,113.28x = 8,921,311,895.81
  5. Step 5: Solve for x
    x = 8,921,311,895.81/126,113.28
  6. Step 6: Final answer
    x = 70,740.46

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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.