Home / 138,609.01-191,280.56-74,946.79

Finding the Fourth Proportional to 138,609.01, 191,280.56 and 74,946.79

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Solution

The fourth proportional to 138,609.01, 191,280.56 and 74,946.79 is: 103,426.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,609.01 : 191,280.56 = 74,946.79 : x
  2. Step 2: Convert to fraction form
    138,609.01/191,280.56 = 74,946.79/x
  3. Step 3: Cross multiply
    138,609.01x = 191,280.56 × 74,946.79
  4. Step 4: Simplify right side
    138,609.01x = 14,335,863,192.37
  5. Step 5: Solve for x
    x = 14,335,863,192.37/138,609.01
  6. Step 6: Final answer
    x = 103,426.64

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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.