Home / 99,102.51-136,761.55-53,780.49

Finding the Fourth Proportional to 99,102.51, 136,761.55 and 53,780.49

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Solution

The fourth proportional to 99,102.51, 136,761.55 and 53,780.49 is: 74,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,102.51 : 136,761.55 = 53,780.49 : x
  2. Step 2: Convert to fraction form
    99,102.51/136,761.55 = 53,780.49/x
  3. Step 3: Cross multiply
    99,102.51x = 136,761.55 × 53,780.49
  4. Step 4: Simplify right side
    99,102.51x = 7,355,103,037.71
  5. Step 5: Solve for x
    x = 7,355,103,037.71/99,102.51
  6. Step 6: Final answer
    x = 74,217.12

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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.