Home / 99,316.19-136,963.51-76,619.39

Finding the Fourth Proportional to 99,316.19, 136,963.51 and 76,619.39

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Solution

The fourth proportional to 99,316.19, 136,963.51 and 76,619.39 is: 105,663.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,316.19 : 136,963.51 = 76,619.39 : x
  2. Step 2: Convert to fraction form
    99,316.19/136,963.51 = 76,619.39/x
  3. Step 3: Cross multiply
    99,316.19x = 136,963.51 × 76,619.39
  4. Step 4: Simplify right side
    99,316.19x = 10,494,059,712.09
  5. Step 5: Solve for x
    x = 10,494,059,712.09/99,316.19
  6. Step 6: Final answer
    x = 105,663.13

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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.