Home / 125,977.20-189,038.70-47,099.40

Finding the Fourth Proportional to 125,977.20, 189,038.70 and 47,099.40

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Solution

The fourth proportional to 125,977.20, 189,038.70 and 47,099.40 is: 70,676.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,977.20 : 189,038.70 = 47,099.40 : x
  2. Step 2: Convert to fraction form
    125,977.20/189,038.70 = 47,099.40/x
  3. Step 3: Cross multiply
    125,977.20x = 189,038.70 × 47,099.40
  4. Step 4: Simplify right side
    125,977.20x = 8,903,609,346.78
  5. Step 5: Solve for x
    x = 8,903,609,346.78/125,977.20
  6. Step 6: Final answer
    x = 70,676.36

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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.