Home / 459,405.54-689,108.09-139,556.16

Finding the Fourth Proportional to 459,405.54, 689,108.09 and 139,556.16

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Solution

The fourth proportional to 459,405.54, 689,108.09 and 139,556.16 is: 209,334.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,405.54 : 689,108.09 = 139,556.16 : x
  2. Step 2: Convert to fraction form
    459,405.54/689,108.09 = 139,556.16/x
  3. Step 3: Cross multiply
    459,405.54x = 689,108.09 × 139,556.16
  4. Step 4: Simplify right side
    459,405.54x = 96,169,278,167.55
  5. Step 5: Solve for x
    x = 96,169,278,167.55/459,405.54
  6. Step 6: Final answer
    x = 209,334.17

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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.