Home / 142,372.76-196,457.32-78,701.88

Finding the Fourth Proportional to 142,372.76, 196,457.32 and 78,701.88

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Solution

The fourth proportional to 142,372.76, 196,457.32 and 78,701.88 is: 108,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,372.76 : 196,457.32 = 78,701.88 : x
  2. Step 2: Convert to fraction form
    142,372.76/196,457.32 = 78,701.88/x
  3. Step 3: Cross multiply
    142,372.76x = 196,457.32 × 78,701.88
  4. Step 4: Simplify right side
    142,372.76x = 15,461,560,423.76
  5. Step 5: Solve for x
    x = 15,461,560,423.76/142,372.76
  6. Step 6: Final answer
    x = 108,599.15

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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.