Home / 105,537.77-145,642.35-57,140.22

Finding the Fourth Proportional to 105,537.77, 145,642.35 and 57,140.22

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Solution

The fourth proportional to 105,537.77, 145,642.35 and 57,140.22 is: 78,853.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,537.77 : 145,642.35 = 57,140.22 : x
  2. Step 2: Convert to fraction form
    105,537.77/145,642.35 = 57,140.22/x
  3. Step 3: Cross multiply
    105,537.77x = 145,642.35 × 57,140.22
  4. Step 4: Simplify right side
    105,537.77x = 8,322,035,920.32
  5. Step 5: Solve for x
    x = 8,322,035,920.32/105,537.77
  6. Step 6: Final answer
    x = 78,853.63

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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.