Home / 105,370.28-145,412.13-57,622.59

Finding the Fourth Proportional to 105,370.28, 145,412.13 and 57,622.59

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Solution

The fourth proportional to 105,370.28, 145,412.13 and 57,622.59 is: 79,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,370.28 : 145,412.13 = 57,622.59 : x
  2. Step 2: Convert to fraction form
    105,370.28/145,412.13 = 57,622.59/x
  3. Step 3: Cross multiply
    105,370.28x = 145,412.13 × 57,622.59
  4. Step 4: Simplify right side
    105,370.28x = 8,379,023,548.02
  5. Step 5: Solve for x
    x = 8,379,023,548.02/105,370.28
  6. Step 6: Final answer
    x = 79,519.80

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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.