Home / 93,063.12-128,765.04-81,151.20

Finding the Fourth Proportional to 93,063.12, 128,765.04 and 81,151.20

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Solution

The fourth proportional to 93,063.12, 128,765.04 and 81,151.20 is: 112,283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,063.12 : 128,765.04 = 81,151.20 : x
  2. Step 2: Convert to fraction form
    93,063.12/128,765.04 = 81,151.20/x
  3. Step 3: Cross multiply
    93,063.12x = 128,765.04 × 81,151.20
  4. Step 4: Simplify right side
    93,063.12x = 10,449,437,514.05
  5. Step 5: Solve for x
    x = 10,449,437,514.05/93,063.12
  6. Step 6: Final answer
    x = 112,283.34

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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.