Home / 99,210.18-136,830.81-65,253.51

Finding the Fourth Proportional to 99,210.18, 136,830.81 and 65,253.51

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Solution

The fourth proportional to 99,210.18, 136,830.81 and 65,253.51 is: 89,997.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,210.18 : 136,830.81 = 65,253.51 : x
  2. Step 2: Convert to fraction form
    99,210.18/136,830.81 = 65,253.51/x
  3. Step 3: Cross multiply
    99,210.18x = 136,830.81 × 65,253.51
  4. Step 4: Simplify right side
    99,210.18x = 8,928,690,628.64
  5. Step 5: Solve for x
    x = 8,928,690,628.64/99,210.18
  6. Step 6: Final answer
    x = 89,997.73

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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.