Home / 99,905.78-149,858.69-40,746.08

Finding the Fourth Proportional to 99,905.78, 149,858.69 and 40,746.08

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Solution

The fourth proportional to 99,905.78, 149,858.69 and 40,746.08 is: 61,119.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,905.78 : 149,858.69 = 40,746.08 : x
  2. Step 2: Convert to fraction form
    99,905.78/149,858.69 = 40,746.08/x
  3. Step 3: Cross multiply
    99,905.78x = 149,858.69 × 40,746.08
  4. Step 4: Simplify right side
    99,905.78x = 6,106,154,342.35
  5. Step 5: Solve for x
    x = 6,106,154,342.35/99,905.78
  6. Step 6: Final answer
    x = 61,119.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.