Home / 98,677.79-136,190.69-64,784.61

Finding the Fourth Proportional to 98,677.79, 136,190.69 and 64,784.61

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Solution

The fourth proportional to 98,677.79, 136,190.69 and 64,784.61 is: 89,412.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,677.79 : 136,190.69 = 64,784.61 : x
  2. Step 2: Convert to fraction form
    98,677.79/136,190.69 = 64,784.61/x
  3. Step 3: Cross multiply
    98,677.79x = 136,190.69 × 64,784.61
  4. Step 4: Simplify right side
    98,677.79x = 8,823,060,737.28
  5. Step 5: Solve for x
    x = 8,823,060,737.28/98,677.79
  6. Step 6: Final answer
    x = 89,412.83

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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.