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Finding the Fourth Proportional to 145,611.40, 218,417.10 and 52,083.40

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Solution

The fourth proportional to 145,611.40, 218,417.10 and 52,083.40 is: 78,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,611.40 : 218,417.10 = 52,083.40 : x
  2. Step 2: Convert to fraction form
    145,611.40/218,417.10 = 52,083.40/x
  3. Step 3: Cross multiply
    145,611.40x = 218,417.10 × 52,083.40
  4. Step 4: Simplify right side
    145,611.40x = 11,375,905,186.14
  5. Step 5: Solve for x
    x = 11,375,905,186.14/145,611.40
  6. Step 6: Final answer
    x = 78,125.10

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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.