Home / 99,057.06-136,717.20-56,615.76

Finding the Fourth Proportional to 99,057.06, 136,717.20 and 56,615.76

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Solution

The fourth proportional to 99,057.06, 136,717.20 and 56,615.76 is: 78,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,057.06 : 136,717.20 = 56,615.76 : x
  2. Step 2: Convert to fraction form
    99,057.06/136,717.20 = 56,615.76/x
  3. Step 3: Cross multiply
    99,057.06x = 136,717.20 × 56,615.76
  4. Step 4: Simplify right side
    99,057.06x = 7,740,348,183.07
  5. Step 5: Solve for x
    x = 7,740,348,183.07/99,057.06
  6. Step 6: Final answer
    x = 78,140.30

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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.