Home / 148,931.19-205,525.05-81,863.19

Finding the Fourth Proportional to 148,931.19, 205,525.05 and 81,863.19

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Solution

The fourth proportional to 148,931.19, 205,525.05 and 81,863.19 is: 112,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,931.19 : 205,525.05 = 81,863.19 : x
  2. Step 2: Convert to fraction form
    148,931.19/205,525.05 = 81,863.19/x
  3. Step 3: Cross multiply
    148,931.19x = 205,525.05 × 81,863.19
  4. Step 4: Simplify right side
    148,931.19x = 16,824,935,808.59
  5. Step 5: Solve for x
    x = 16,824,935,808.59/148,931.19
  6. Step 6: Final answer
    x = 112,971.20

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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.