Home / 113,722.40-156,933.51-63,421.40

Finding the Fourth Proportional to 113,722.40, 156,933.51 and 63,421.40

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Solution

The fourth proportional to 113,722.40, 156,933.51 and 63,421.40 is: 87,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,722.40 : 156,933.51 = 63,421.40 : x
  2. Step 2: Convert to fraction form
    113,722.40/156,933.51 = 63,421.40/x
  3. Step 3: Cross multiply
    113,722.40x = 156,933.51 × 63,421.40
  4. Step 4: Simplify right side
    113,722.40x = 9,952,942,911.11
  5. Step 5: Solve for x
    x = 9,952,942,911.11/113,722.40
  6. Step 6: Final answer
    x = 87,519.63

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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.