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Finding the Fourth Proportional to 107,932, 148,946.16 and 63,220

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Solution

The fourth proportional to 107,932, 148,946.16 and 63,220 is: 87,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,932 : 148,946.16 = 63,220 : x
  2. Step 2: Convert to fraction form
    107,932/148,946.16 = 63,220/x
  3. Step 3: Cross multiply
    107,932x = 148,946.16 × 63,220
  4. Step 4: Simplify right side
    107,932x = 9,416,376,235.20
  5. Step 5: Solve for x
    x = 9,416,376,235.20/107,932
  6. Step 6: Final answer
    x = 87,243.60

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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.