Home / 128,545.08-177,388.26-74,097.42

Finding the Fourth Proportional to 128,545.08, 177,388.26 and 74,097.42

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Solution

The fourth proportional to 128,545.08, 177,388.26 and 74,097.42 is: 102,252.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,545.08 : 177,388.26 = 74,097.42 : x
  2. Step 2: Convert to fraction form
    128,545.08/177,388.26 = 74,097.42/x
  3. Step 3: Cross multiply
    128,545.08x = 177,388.26 × 74,097.42
  4. Step 4: Simplify right side
    128,545.08x = 13,144,012,404.29
  5. Step 5: Solve for x
    x = 13,144,012,404.29/128,545.08
  6. Step 6: Final answer
    x = 102,252.16

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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.