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Finding the Fourth Proportional to 103,630.88, 143,013.84 and 58,921.76

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Solution

The fourth proportional to 103,630.88, 143,013.84 and 58,921.76 is: 81,313.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.88 : 143,013.84 = 58,921.76 : x
  2. Step 2: Convert to fraction form
    103,630.88/143,013.84 = 58,921.76/x
  3. Step 3: Cross multiply
    103,630.88x = 143,013.84 × 58,921.76
  4. Step 4: Simplify right side
    103,630.88x = 8,426,627,157.16
  5. Step 5: Solve for x
    x = 8,426,627,157.16/103,630.88
  6. Step 6: Final answer
    x = 81,313.86

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1.5x scale

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.