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Finding the Fourth Proportional to 100,673.40, 150,681.51 and 74,012.34

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Solution

The fourth proportional to 100,673.40, 150,681.51 and 74,012.34 is: 110,776.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,673.40 : 150,681.51 = 74,012.34 : x
  2. Step 2: Convert to fraction form
    100,673.40/150,681.51 = 74,012.34/x
  3. Step 3: Cross multiply
    100,673.40x = 150,681.51 × 74,012.34
  4. Step 4: Simplify right side
    100,673.40x = 11,152,291,149.83
  5. Step 5: Solve for x
    x = 11,152,291,149.83/100,673.40
  6. Step 6: Final answer
    x = 110,776.94

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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.