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Finding the Fourth Proportional to 109,152.68, 150,630.46 and 61,406.06

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Solution

The fourth proportional to 109,152.68, 150,630.46 and 61,406.06 is: 84,740.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,152.68 : 150,630.46 = 61,406.06 : x
  2. Step 2: Convert to fraction form
    109,152.68/150,630.46 = 61,406.06/x
  3. Step 3: Cross multiply
    109,152.68x = 150,630.46 × 61,406.06
  4. Step 4: Simplify right side
    109,152.68x = 9,249,622,157.92
  5. Step 5: Solve for x
    x = 9,249,622,157.92/109,152.68
  6. Step 6: Final answer
    x = 84,740.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.