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Finding the Fourth Proportional to 102,485.80, 141,408.90 and 62,220.76

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Solution

The fourth proportional to 102,485.80, 141,408.90 and 62,220.76 is: 85,851.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,485.80 : 141,408.90 = 62,220.76 : x
  2. Step 2: Convert to fraction form
    102,485.80/141,408.90 = 62,220.76/x
  3. Step 3: Cross multiply
    102,485.80x = 141,408.90 × 62,220.76
  4. Step 4: Simplify right side
    102,485.80x = 8,798,569,228.76
  5. Step 5: Solve for x
    x = 8,798,569,228.76/102,485.80
  6. Step 6: Final answer
    x = 85,851.59

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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.