Home / 138,433.41-191,038.22-74,771.26

Finding the Fourth Proportional to 138,433.41, 191,038.22 and 74,771.26

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Solution

The fourth proportional to 138,433.41, 191,038.22 and 74,771.26 is: 103,184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,433.41 : 191,038.22 = 74,771.26 : x
  2. Step 2: Convert to fraction form
    138,433.41/191,038.22 = 74,771.26/x
  3. Step 3: Cross multiply
    138,433.41x = 191,038.22 × 74,771.26
  4. Step 4: Simplify right side
    138,433.41x = 14,284,168,417.56
  5. Step 5: Solve for x
    x = 14,284,168,417.56/138,433.41
  6. Step 6: Final answer
    x = 103,184.40

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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.