Home / 178,019.07-266,998.38-78,152.45

Finding the Fourth Proportional to 178,019.07, 266,998.38 and 78,152.45

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Solution

The fourth proportional to 178,019.07, 266,998.38 and 78,152.45 is: 117,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,019.07 : 266,998.38 = 78,152.45 : x
  2. Step 2: Convert to fraction form
    178,019.07/266,998.38 = 78,152.45/x
  3. Step 3: Cross multiply
    178,019.07x = 266,998.38 × 78,152.45
  4. Step 4: Simplify right side
    178,019.07x = 20,866,575,914.97
  5. Step 5: Solve for x
    x = 20,866,575,914.97/178,019.07
  6. Step 6: Final answer
    x = 117,215.40

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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.