Home / 93,143.13-128,540.03-50,703.45

Finding the Fourth Proportional to 93,143.13, 128,540.03 and 50,703.45

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Solution

The fourth proportional to 93,143.13, 128,540.03 and 50,703.45 is: 69,972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,143.13 : 128,540.03 = 50,703.45 : x
  2. Step 2: Convert to fraction form
    93,143.13/128,540.03 = 50,703.45/x
  3. Step 3: Cross multiply
    93,143.13x = 128,540.03 × 50,703.45
  4. Step 4: Simplify right side
    93,143.13x = 6,517,422,730.59
  5. Step 5: Solve for x
    x = 6,517,422,730.59/93,143.13
  6. Step 6: Final answer
    x = 69,972.12

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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.