Home / 118,399.42-163,420.99-76,031.76

Finding the Fourth Proportional to 118,399.42, 163,420.99 and 76,031.76

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Solution

The fourth proportional to 118,399.42, 163,420.99 and 76,031.76 is: 104,942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,399.42 : 163,420.99 = 76,031.76 : x
  2. Step 2: Convert to fraction form
    118,399.42/163,420.99 = 76,031.76/x
  3. Step 3: Cross multiply
    118,399.42x = 163,420.99 × 76,031.76
  4. Step 4: Simplify right side
    118,399.42x = 12,425,186,341.07
  5. Step 5: Solve for x
    x = 12,425,186,341.07/118,399.42
  6. Step 6: Final answer
    x = 104,942.97

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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.