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Finding the Fourth Proportional to 100,390.41, 150,510.73 and 60,400.03

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Solution

The fourth proportional to 100,390.41, 150,510.73 and 60,400.03 is: 90,554.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,390.41 : 150,510.73 = 60,400.03 : x
  2. Step 2: Convert to fraction form
    100,390.41/150,510.73 = 60,400.03/x
  3. Step 3: Cross multiply
    100,390.41x = 150,510.73 × 60,400.03
  4. Step 4: Simplify right side
    100,390.41x = 9,090,852,607.32
  5. Step 5: Solve for x
    x = 9,090,852,607.32/100,390.41
  6. Step 6: Final answer
    x = 90,554.99

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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.