Home / 107,021.25-147,688.95-61,699.02

Finding the Fourth Proportional to 107,021.25, 147,688.95 and 61,699.02

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Solution

The fourth proportional to 107,021.25, 147,688.95 and 61,699.02 is: 85,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,021.25 : 147,688.95 = 61,699.02 : x
  2. Step 2: Convert to fraction form
    107,021.25/147,688.95 = 61,699.02/x
  3. Step 3: Cross multiply
    107,021.25x = 147,688.95 × 61,699.02
  4. Step 4: Simplify right side
    107,021.25x = 9,112,263,479.83
  5. Step 5: Solve for x
    x = 9,112,263,479.83/107,021.25
  6. Step 6: Final answer
    x = 85,144.43

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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.