Home / 105,228.20-145,218.04-57,482.34

Finding the Fourth Proportional to 105,228.20, 145,218.04 and 57,482.34

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Solution

The fourth proportional to 105,228.20, 145,218.04 and 57,482.34 is: 79,327.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,228.20 : 145,218.04 = 57,482.34 : x
  2. Step 2: Convert to fraction form
    105,228.20/145,218.04 = 57,482.34/x
  3. Step 3: Cross multiply
    105,228.20x = 145,218.04 × 57,482.34
  4. Step 4: Simplify right side
    105,228.20x = 8,347,472,749.41
  5. Step 5: Solve for x
    x = 8,347,472,749.41/105,228.20
  6. Step 6: Final answer
    x = 79,327.34

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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.