Home / 112,960.77-155,880.21-65,211.27

Finding the Fourth Proportional to 112,960.77, 155,880.21 and 65,211.27

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Solution

The fourth proportional to 112,960.77, 155,880.21 and 65,211.27 is: 89,988.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,960.77 : 155,880.21 = 65,211.27 : x
  2. Step 2: Convert to fraction form
    112,960.77/155,880.21 = 65,211.27/x
  3. Step 3: Cross multiply
    112,960.77x = 155,880.21 × 65,211.27
  4. Step 4: Simplify right side
    112,960.77x = 10,165,146,461.97
  5. Step 5: Solve for x
    x = 10,165,146,461.97/112,960.77
  6. Step 6: Final answer
    x = 89,988.29

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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.