Home / 153,907.40-230,688.30-78,998.60

Finding the Fourth Proportional to 153,907.40, 230,688.30 and 78,998.60

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Solution

The fourth proportional to 153,907.40, 230,688.30 and 78,998.60 is: 118,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,907.40 : 230,688.30 = 78,998.60 : x
  2. Step 2: Convert to fraction form
    153,907.40/230,688.30 = 78,998.60/x
  3. Step 3: Cross multiply
    153,907.40x = 230,688.30 × 78,998.60
  4. Step 4: Simplify right side
    153,907.40x = 18,224,052,736.38
  5. Step 5: Solve for x
    x = 18,224,052,736.38/153,907.40
  6. Step 6: Final answer
    x = 118,409.20

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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.