Home / 105,514,142.20-145,617,594.14-66,389,455.78

Finding the Fourth Proportional to 105,514,142.20, 145,617,594.14 and 66,389,455.78

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Solution

The fourth proportional to 105,514,142.20, 145,617,594.14 and 66,389,455.78 is: 91,622,531.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,514,142.20 : 145,617,594.14 = 66,389,455.78 : x
  2. Step 2: Convert to fraction form
    105,514,142.20/145,617,594.14 = 66,389,455.78/x
  3. Step 3: Cross multiply
    105,514,142.20x = 145,617,594.14 × 66,389,455.78
  4. Step 4: Simplify right side
    105,514,142.20x = 9,667,472,826,947,516
  5. Step 5: Solve for x
    x = 9,667,472,826,947,516/105,514,142.20
  6. Step 6: Final answer
    x = 91,622,531.59

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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.