Home / 128,598.23-177,461.54-71,235.25

Finding the Fourth Proportional to 128,598.23, 177,461.54 and 71,235.25

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Solution

The fourth proportional to 128,598.23, 177,461.54 and 71,235.25 is: 98,302.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,598.23 : 177,461.54 = 71,235.25 : x
  2. Step 2: Convert to fraction form
    128,598.23/177,461.54 = 71,235.25/x
  3. Step 3: Cross multiply
    128,598.23x = 177,461.54 × 71,235.25
  4. Step 4: Simplify right side
    128,598.23x = 12,641,517,167.29
  5. Step 5: Solve for x
    x = 12,641,517,167.29/128,598.23
  6. Step 6: Final answer
    x = 98,302.42

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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.