Home / 105,885.21-146,123.94-58,138.74

Finding the Fourth Proportional to 105,885.21, 146,123.94 and 58,138.74

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Solution

The fourth proportional to 105,885.21, 146,123.94 and 58,138.74 is: 80,232.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,885.21 : 146,123.94 = 58,138.74 : x
  2. Step 2: Convert to fraction form
    105,885.21/146,123.94 = 58,138.74/x
  3. Step 3: Cross multiply
    105,885.21x = 146,123.94 × 58,138.74
  4. Step 4: Simplify right side
    105,885.21x = 8,495,461,755.44
  5. Step 5: Solve for x
    x = 8,495,461,755.44/105,885.21
  6. Step 6: Final answer
    x = 80,232.75

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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.