Home / 105,518.69-145,615.77-57,772.02

Finding the Fourth Proportional to 105,518.69, 145,615.77 and 57,772.02

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Solution

The fourth proportional to 105,518.69, 145,615.77 and 57,772.02 is: 79,725.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,518.69 : 145,615.77 = 57,772.02 : x
  2. Step 2: Convert to fraction form
    105,518.69/145,615.77 = 57,772.02/x
  3. Step 3: Cross multiply
    105,518.69x = 145,615.77 × 57,772.02
  4. Step 4: Simplify right side
    105,518.69x = 8,412,517,176.76
  5. Step 5: Solve for x
    x = 8,412,517,176.76/105,518.69
  6. Step 6: Final answer
    x = 79,725.38

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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.