Home / 145,809.25-201,216.77-78,741.25

Finding the Fourth Proportional to 145,809.25, 201,216.77 and 78,741.25

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Solution

The fourth proportional to 145,809.25, 201,216.77 and 78,741.25 is: 108,662.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,809.25 : 201,216.77 = 78,741.25 : x
  2. Step 2: Convert to fraction form
    145,809.25/201,216.77 = 78,741.25/x
  3. Step 3: Cross multiply
    145,809.25x = 201,216.77 × 78,741.25
  4. Step 4: Simplify right side
    145,809.25x = 15,844,059,597.06
  5. Step 5: Solve for x
    x = 15,844,059,597.06/145,809.25
  6. Step 6: Final answer
    x = 108,662.93

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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.