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Finding the Fourth Proportional to 153,652.25, 212,024.66 and 85,662.88

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Solution

The fourth proportional to 153,652.25, 212,024.66 and 85,662.88 is: 118,206.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,652.25 : 212,024.66 = 85,662.88 : x
  2. Step 2: Convert to fraction form
    153,652.25/212,024.66 = 85,662.88/x
  3. Step 3: Cross multiply
    153,652.25x = 212,024.66 × 85,662.88
  4. Step 4: Simplify right side
    153,652.25x = 18,162,642,048.24
  5. Step 5: Solve for x
    x = 18,162,642,048.24/153,652.25
  6. Step 6: Final answer
    x = 118,206.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.