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Finding the Fourth Proportional to 157,406.40, 236,109.60 and 126,302.40

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Solution

The fourth proportional to 157,406.40, 236,109.60 and 126,302.40 is: 189,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,406.40 : 236,109.60 = 126,302.40 : x
  2. Step 2: Convert to fraction form
    157,406.40/236,109.60 = 126,302.40/x
  3. Step 3: Cross multiply
    157,406.40x = 236,109.60 × 126,302.40
  4. Step 4: Simplify right side
    157,406.40x = 29,821,209,143.04
  5. Step 5: Solve for x
    x = 29,821,209,143.04/157,406.40
  6. Step 6: Final answer
    x = 189,453.60

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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.