Home / 98,676.79-136,189.31-64,783.61

Finding the Fourth Proportional to 98,676.79, 136,189.31 and 64,783.61

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Solution

The fourth proportional to 98,676.79, 136,189.31 and 64,783.61 is: 89,411.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,676.79 : 136,189.31 = 64,783.61 : x
  2. Step 2: Convert to fraction form
    98,676.79/136,189.31 = 64,783.61/x
  3. Step 3: Cross multiply
    98,676.79x = 136,189.31 × 64,783.61
  4. Step 4: Simplify right side
    98,676.79x = 8,822,835,298.08
  5. Step 5: Solve for x
    x = 8,822,835,298.08/98,676.79
  6. Step 6: Final answer
    x = 89,411.45

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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.