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Finding the Fourth Proportional to 98,710.84, 136,220.99 and 55,699.46

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Solution

The fourth proportional to 98,710.84, 136,220.99 and 55,699.46 is: 76,865.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,710.84 : 136,220.99 = 55,699.46 : x
  2. Step 2: Convert to fraction form
    98,710.84/136,220.99 = 55,699.46/x
  3. Step 3: Cross multiply
    98,710.84x = 136,220.99 × 55,699.46
  4. Step 4: Simplify right side
    98,710.84x = 7,587,435,134.89
  5. Step 5: Solve for x
    x = 7,587,435,134.89/98,710.84
  6. Step 6: Final answer
    x = 76,865.27

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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.