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Finding the Fourth Proportional to 128,457.65, 192,437.11 and 94,662.32

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Solution

The fourth proportional to 128,457.65, 192,437.11 and 94,662.32 is: 141,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,457.65 : 192,437.11 = 94,662.32 : x
  2. Step 2: Convert to fraction form
    128,457.65/192,437.11 = 94,662.32/x
  3. Step 3: Cross multiply
    128,457.65x = 192,437.11 × 94,662.32
  4. Step 4: Simplify right side
    128,457.65x = 18,216,541,851.20
  5. Step 5: Solve for x
    x = 18,216,541,851.20/128,457.65
  6. Step 6: Final answer
    x = 141,809.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.