Home / 105,487.16-145,572.50-57,743.56

Finding the Fourth Proportional to 105,487.16, 145,572.50 and 57,743.56

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Solution

The fourth proportional to 105,487.16, 145,572.50 and 57,743.56 is: 79,686.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,487.16 : 145,572.50 = 57,743.56 : x
  2. Step 2: Convert to fraction form
    105,487.16/145,572.50 = 57,743.56/x
  3. Step 3: Cross multiply
    105,487.16x = 145,572.50 × 57,743.56
  4. Step 4: Simplify right side
    105,487.16x = 8,405,873,371.52
  5. Step 5: Solve for x
    x = 8,405,873,371.52/105,487.16
  6. Step 6: Final answer
    x = 79,686.22

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1.5x scale

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.