Home / 157,103.20-235,715.28-72,906.40

Finding the Fourth Proportional to 157,103.20, 235,715.28 and 72,906.40

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Solution

The fourth proportional to 157,103.20, 235,715.28 and 72,906.40 is: 109,387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,103.20 : 235,715.28 = 72,906.40 : x
  2. Step 2: Convert to fraction form
    157,103.20/235,715.28 = 72,906.40/x
  3. Step 3: Cross multiply
    157,103.20x = 235,715.28 × 72,906.40
  4. Step 4: Simplify right side
    157,103.20x = 17,185,152,489.79
  5. Step 5: Solve for x
    x = 17,185,152,489.79/157,103.20
  6. Step 6: Final answer
    x = 109,387.67

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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.