Home / 138,652.29-191,341.04-74,989.94

Finding the Fourth Proportional to 138,652.29, 191,341.04 and 74,989.94

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Solution

The fourth proportional to 138,652.29, 191,341.04 and 74,989.94 is: 103,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,652.29 : 191,341.04 = 74,989.94 : x
  2. Step 2: Convert to fraction form
    138,652.29/191,341.04 = 74,989.94/x
  3. Step 3: Cross multiply
    138,652.29x = 191,341.04 × 74,989.94
  4. Step 4: Simplify right side
    138,652.29x = 14,348,651,777.48
  5. Step 5: Solve for x
    x = 14,348,651,777.48/138,652.29
  6. Step 6: Final answer
    x = 103,486.58

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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.