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Finding the Fourth Proportional to 115,464.40, 161,256.50 and 115,464.40

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Solution

The fourth proportional to 115,464.40, 161,256.50 and 115,464.40 is: 161,256.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,464.40 : 161,256.50 = 115,464.40 : x
  2. Step 2: Convert to fraction form
    115,464.40/161,256.50 = 115,464.40/x
  3. Step 3: Cross multiply
    115,464.40x = 161,256.50 × 115,464.40
  4. Step 4: Simplify right side
    115,464.40x = 18,619,385,018.60
  5. Step 5: Solve for x
    x = 18,619,385,018.60/115,464.40
  6. Step 6: Final answer
    x = 161,256.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.