Home / 128,416,247.20-192,624,370.80-42,167,965.60

Finding the Fourth Proportional to 128,416,247.20, 192,624,370.80 and 42,167,965.60

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Solution

The fourth proportional to 128,416,247.20, 192,624,370.80 and 42,167,965.60 is: 63,251,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,416,247.20 : 192,624,370.80 = 42,167,965.60 : x
  2. Step 2: Convert to fraction form
    128,416,247.20/192,624,370.80 = 42,167,965.60/x
  3. Step 3: Cross multiply
    128,416,247.20x = 192,624,370.80 × 42,167,965.60
  4. Step 4: Simplify right side
    128,416,247.20x = 8,122,577,841,616,045
  5. Step 5: Solve for x
    x = 8,122,577,841,616,045/128,416,247.20
  6. Step 6: Final answer
    x = 63,251,948.40

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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.