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Finding the Fourth Proportional to 145,611.54, 218,417.05 and 45,780.44

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Solution

The fourth proportional to 145,611.54, 218,417.05 and 45,780.44 is: 68,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,611.54 : 218,417.05 = 45,780.44 : x
  2. Step 2: Convert to fraction form
    145,611.54/218,417.05 = 45,780.44/x
  3. Step 3: Cross multiply
    145,611.54x = 218,417.05 × 45,780.44
  4. Step 4: Simplify right side
    145,611.54x = 9,999,228,652.50
  5. Step 5: Solve for x
    x = 9,999,228,652.50/145,611.54
  6. Step 6: Final answer
    x = 68,670.58

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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.