Home / 132,455.20-198,687.60-38,970.40

Finding the Fourth Proportional to 132,455.20, 198,687.60 and 38,970.40

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Solution

The fourth proportional to 132,455.20, 198,687.60 and 38,970.40 is: 58,457.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,455.20 : 198,687.60 = 38,970.40 : x
  2. Step 2: Convert to fraction form
    132,455.20/198,687.60 = 38,970.40/x
  3. Step 3: Cross multiply
    132,455.20x = 198,687.60 × 38,970.40
  4. Step 4: Simplify right side
    132,455.20x = 7,742,935,247.04
  5. Step 5: Solve for x
    x = 7,742,935,247.04/132,455.20
  6. Step 6: Final answer
    x = 58,457.01

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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.