Home / 109,308.74-163,920.15-53,132.40

Finding the Fourth Proportional to 109,308.74, 163,920.15 and 53,132.40

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Solution

The fourth proportional to 109,308.74, 163,920.15 and 53,132.40 is: 79,677.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,308.74 : 163,920.15 = 53,132.40 : x
  2. Step 2: Convert to fraction form
    109,308.74/163,920.15 = 53,132.40/x
  3. Step 3: Cross multiply
    109,308.74x = 163,920.15 × 53,132.40
  4. Step 4: Simplify right side
    109,308.74x = 8,709,470,977.86
  5. Step 5: Solve for x
    x = 8,709,470,977.86/109,308.74
  6. Step 6: Final answer
    x = 79,677.72

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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.