Home / 105,042.52-157,516.38-30,145.66

Finding the Fourth Proportional to 105,042.52, 157,516.38 and 30,145.66

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Solution

The fourth proportional to 105,042.52, 157,516.38 and 30,145.66 is: 45,204.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,042.52 : 157,516.38 = 30,145.66 : x
  2. Step 2: Convert to fraction form
    105,042.52/157,516.38 = 30,145.66/x
  3. Step 3: Cross multiply
    105,042.52x = 157,516.38 × 30,145.66
  4. Step 4: Simplify right side
    105,042.52x = 4,748,435,235.91
  5. Step 5: Solve for x
    x = 4,748,435,235.91/105,042.52
  6. Step 6: Final answer
    x = 45,204.89

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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.