Home / 145,185.24-200,354.94-81,528.60

Finding the Fourth Proportional to 145,185.24, 200,354.94 and 81,528.60

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Solution

The fourth proportional to 145,185.24, 200,354.94 and 81,528.60 is: 112,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,185.24 : 200,354.94 = 81,528.60 : x
  2. Step 2: Convert to fraction form
    145,185.24/200,354.94 = 81,528.60/x
  3. Step 3: Cross multiply
    145,185.24x = 200,354.94 × 81,528.60
  4. Step 4: Simplify right side
    145,185.24x = 16,334,657,761.28
  5. Step 5: Solve for x
    x = 16,334,657,761.28/145,185.24
  6. Step 6: Final answer
    x = 112,509.08

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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.