Home / 128,927.34-177,927.57-85,832.46

Finding the Fourth Proportional to 128,927.34, 177,927.57 and 85,832.46

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Solution

The fourth proportional to 128,927.34, 177,927.57 and 85,832.46 is: 118,454.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,927.34 : 177,927.57 = 85,832.46 : x
  2. Step 2: Convert to fraction form
    128,927.34/177,927.57 = 85,832.46/x
  3. Step 3: Cross multiply
    128,927.34x = 177,927.57 × 85,832.46
  4. Step 4: Simplify right side
    128,927.34x = 15,271,961,034.92
  5. Step 5: Solve for x
    x = 15,271,961,034.92/128,927.34
  6. Step 6: Final answer
    x = 118,454.01

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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.