Home / 105,726.80-145,909.44-57,987.02

Finding the Fourth Proportional to 105,726.80, 145,909.44 and 57,987.02

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Solution

The fourth proportional to 105,726.80, 145,909.44 and 57,987.02 is: 80,025.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,726.80 : 145,909.44 = 57,987.02 : x
  2. Step 2: Convert to fraction form
    105,726.80/145,909.44 = 57,987.02/x
  3. Step 3: Cross multiply
    105,726.80x = 145,909.44 × 57,987.02
  4. Step 4: Simplify right side
    105,726.80x = 8,460,853,615.47
  5. Step 5: Solve for x
    x = 8,460,853,615.47/105,726.80
  6. Step 6: Final answer
    x = 80,025.63

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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.