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Finding the Fourth Proportional to 138,446.01, 191,055.58 and 74,783.84

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Solution

The fourth proportional to 138,446.01, 191,055.58 and 74,783.84 is: 103,201.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,446.01 : 191,055.58 = 74,783.84 : x
  2. Step 2: Convert to fraction form
    138,446.01/191,055.58 = 74,783.84/x
  3. Step 3: Cross multiply
    138,446.01x = 191,055.58 × 74,783.84
  4. Step 4: Simplify right side
    138,446.01x = 14,287,868,783.59
  5. Step 5: Solve for x
    x = 14,287,868,783.59/138,446.01
  6. Step 6: Final answer
    x = 103,201.74

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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.