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Finding the Fourth Proportional to 145,870.70, 218,806.05 and 82,885.10

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Solution

The fourth proportional to 145,870.70, 218,806.05 and 82,885.10 is: 124,327.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,870.70 : 218,806.05 = 82,885.10 : x
  2. Step 2: Convert to fraction form
    145,870.70/218,806.05 = 82,885.10/x
  3. Step 3: Cross multiply
    145,870.70x = 218,806.05 × 82,885.10
  4. Step 4: Simplify right side
    145,870.70x = 18,135,761,334.86
  5. Step 5: Solve for x
    x = 18,135,761,334.86/145,870.70
  6. Step 6: Final answer
    x = 124,327.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.