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Finding the Fourth Proportional to 153,663.48, 212,040.06 and 85,674.06

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Solution

The fourth proportional to 153,663.48, 212,040.06 and 85,674.06 is: 118,221.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,663.48 : 212,040.06 = 85,674.06 : x
  2. Step 2: Convert to fraction form
    153,663.48/212,040.06 = 85,674.06/x
  3. Step 3: Cross multiply
    153,663.48x = 212,040.06 × 85,674.06
  4. Step 4: Simplify right side
    153,663.48x = 18,166,332,822.84
  5. Step 5: Solve for x
    x = 18,166,332,822.84/153,663.48
  6. Step 6: Final answer
    x = 118,221.54

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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.