Home / 142,776.75-197,031.84-85,418.49

Finding the Fourth Proportional to 142,776.75, 197,031.84 and 85,418.49

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Solution

The fourth proportional to 142,776.75, 197,031.84 and 85,418.49 is: 117,877.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,776.75 : 197,031.84 = 85,418.49 : x
  2. Step 2: Convert to fraction form
    142,776.75/197,031.84 = 85,418.49/x
  3. Step 3: Cross multiply
    142,776.75x = 197,031.84 × 85,418.49
  4. Step 4: Simplify right side
    142,776.75x = 16,830,162,254.72
  5. Step 5: Solve for x
    x = 16,830,162,254.72/142,776.75
  6. Step 6: Final answer
    x = 117,877.47

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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.