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Finding the Fourth Proportional to 154,188.63, 231,129.72 and 70,011

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Solution

The fourth proportional to 154,188.63, 231,129.72 and 70,011 is: 104,946.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,188.63 : 231,129.72 = 70,011 : x
  2. Step 2: Convert to fraction form
    154,188.63/231,129.72 = 70,011/x
  3. Step 3: Cross multiply
    154,188.63x = 231,129.72 × 70,011
  4. Step 4: Simplify right side
    154,188.63x = 16,181,622,826.92
  5. Step 5: Solve for x
    x = 16,181,622,826.92/154,188.63
  6. Step 6: Final answer
    x = 104,946.93

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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.