Home / 128,302.32-177,056.13-73,865.16

Finding the Fourth Proportional to 128,302.32, 177,056.13 and 73,865.16

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Solution

The fourth proportional to 128,302.32, 177,056.13 and 73,865.16 is: 101,933.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,302.32 : 177,056.13 = 73,865.16 : x
  2. Step 2: Convert to fraction form
    128,302.32/177,056.13 = 73,865.16/x
  3. Step 3: Cross multiply
    128,302.32x = 177,056.13 × 73,865.16
  4. Step 4: Simplify right side
    128,302.32x = 13,078,279,371.43
  5. Step 5: Solve for x
    x = 13,078,279,371.43/128,302.32
  6. Step 6: Final answer
    x = 101,933.30

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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.