Home / 105,786.18-145,980.09-58,038.54

Finding the Fourth Proportional to 105,786.18, 145,980.09 and 58,038.54

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Solution

The fourth proportional to 105,786.18, 145,980.09 and 58,038.54 is: 80,090.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,786.18 : 145,980.09 = 58,038.54 : x
  2. Step 2: Convert to fraction form
    105,786.18/145,980.09 = 58,038.54/x
  3. Step 3: Cross multiply
    105,786.18x = 145,980.09 × 58,038.54
  4. Step 4: Simplify right side
    105,786.18x = 8,472,471,292.67
  5. Step 5: Solve for x
    x = 8,472,471,292.67/105,786.18
  6. Step 6: Final answer
    x = 80,090.53

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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.