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Finding the Fourth Proportional to 189,920.88, 262,094.76 and 105,043.68

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Solution

The fourth proportional to 189,920.88, 262,094.76 and 105,043.68 is: 144,962.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,920.88 : 262,094.76 = 105,043.68 : x
  2. Step 2: Convert to fraction form
    189,920.88/262,094.76 = 105,043.68/x
  3. Step 3: Cross multiply
    189,920.88x = 262,094.76 × 105,043.68
  4. Step 4: Simplify right side
    189,920.88x = 27,531,398,099.12
  5. Step 5: Solve for x
    x = 27,531,398,099.12/189,920.88
  6. Step 6: Final answer
    x = 144,962.46

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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.