Home / 147,153.70-203,065.15-81,746.74

Finding the Fourth Proportional to 147,153.70, 203,065.15 and 81,746.74

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Solution

The fourth proportional to 147,153.70, 203,065.15 and 81,746.74 is: 112,806.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,153.70 : 203,065.15 = 81,746.74 : x
  2. Step 2: Convert to fraction form
    147,153.70/203,065.15 = 81,746.74/x
  3. Step 3: Cross multiply
    147,153.70x = 203,065.15 × 81,746.74
  4. Step 4: Simplify right side
    147,153.70x = 16,599,914,020.11
  5. Step 5: Solve for x
    x = 16,599,914,020.11/147,153.70
  6. Step 6: Final answer
    x = 112,806.64

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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.