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Finding the Fourth Proportional to 145,459.58, 200,761.86 and 91,037.05

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Solution

The fourth proportional to 145,459.58, 200,761.86 and 91,037.05 is: 125,648.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,459.58 : 200,761.86 = 91,037.05 : x
  2. Step 2: Convert to fraction form
    145,459.58/200,761.86 = 91,037.05/x
  3. Step 3: Cross multiply
    145,459.58x = 200,761.86 × 91,037.05
  4. Step 4: Simplify right side
    145,459.58x = 18,276,767,943.60
  5. Step 5: Solve for x
    x = 18,276,767,943.60/145,459.58
  6. Step 6: Final answer
    x = 125,648.43

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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.