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Finding the Fourth Proportional to 84,828.60, 127,242.90 and 65,145.60

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Solution

The fourth proportional to 84,828.60, 127,242.90 and 65,145.60 is: 97,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,828.60 : 127,242.90 = 65,145.60 : x
  2. Step 2: Convert to fraction form
    84,828.60/127,242.90 = 65,145.60/x
  3. Step 3: Cross multiply
    84,828.60x = 127,242.90 × 65,145.60
  4. Step 4: Simplify right side
    84,828.60x = 8,289,315,066.24
  5. Step 5: Solve for x
    x = 8,289,315,066.24/84,828.60
  6. Step 6: Final answer
    x = 97,718.40

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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.