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Finding the Fourth Proportional to 98,798.70, 136,304.98 and 64,825.92

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Solution

The fourth proportional to 98,798.70, 136,304.98 and 64,825.92 is: 89,435.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,798.70 : 136,304.98 = 64,825.92 : x
  2. Step 2: Convert to fraction form
    98,798.70/136,304.98 = 64,825.92/x
  3. Step 3: Cross multiply
    98,798.70x = 136,304.98 × 64,825.92
  4. Step 4: Simplify right side
    98,798.70x = 8,836,095,729.08
  5. Step 5: Solve for x
    x = 8,836,095,729.08/98,798.70
  6. Step 6: Final answer
    x = 89,435.34

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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.