Home / 105,215.40-145,200.74-57,473.19

Finding the Fourth Proportional to 105,215.40, 145,200.74 and 57,473.19

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Solution

The fourth proportional to 105,215.40, 145,200.74 and 57,473.19 is: 79,314.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,215.40 : 145,200.74 = 57,473.19 : x
  2. Step 2: Convert to fraction form
    105,215.40/145,200.74 = 57,473.19/x
  3. Step 3: Cross multiply
    105,215.40x = 145,200.74 × 57,473.19
  4. Step 4: Simplify right side
    105,215.40x = 8,345,149,430.79
  5. Step 5: Solve for x
    x = 8,345,149,430.79/105,215.40
  6. Step 6: Final answer
    x = 79,314.90

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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.