Home / 106,751.54-147,331.78-61,428.60

Finding the Fourth Proportional to 106,751.54, 147,331.78 and 61,428.60

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Solution

The fourth proportional to 106,751.54, 147,331.78 and 61,428.60 is: 84,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,751.54 : 147,331.78 = 61,428.60 : x
  2. Step 2: Convert to fraction form
    106,751.54/147,331.78 = 61,428.60/x
  3. Step 3: Cross multiply
    106,751.54x = 147,331.78 × 61,428.60
  4. Step 4: Simplify right side
    106,751.54x = 9,050,384,827.34
  5. Step 5: Solve for x
    x = 9,050,384,827.34/106,751.54
  6. Step 6: Final answer
    x = 84,779.90

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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.