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Finding the Fourth Proportional to 145,422.41, 218,136.36 and 45,580.40

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Solution

The fourth proportional to 145,422.41, 218,136.36 and 45,580.40 is: 68,371.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,422.41 : 218,136.36 = 45,580.40 : x
  2. Step 2: Convert to fraction form
    145,422.41/218,136.36 = 45,580.40/x
  3. Step 3: Cross multiply
    145,422.41x = 218,136.36 × 45,580.40
  4. Step 4: Simplify right side
    145,422.41x = 9,942,742,543.34
  5. Step 5: Solve for x
    x = 9,942,742,543.34/145,422.41
  6. Step 6: Final answer
    x = 68,371.46

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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.