Home / 105,097.05-145,032.74-57,351.21

Finding the Fourth Proportional to 105,097.05, 145,032.74 and 57,351.21

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Solution

The fourth proportional to 105,097.05, 145,032.74 and 57,351.21 is: 79,144.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,097.05 : 145,032.74 = 57,351.21 : x
  2. Step 2: Convert to fraction form
    105,097.05/145,032.74 = 57,351.21/x
  3. Step 3: Cross multiply
    105,097.05x = 145,032.74 × 57,351.21
  4. Step 4: Simplify right side
    105,097.05x = 8,317,802,841.86
  5. Step 5: Solve for x
    x = 8,317,802,841.86/105,097.05
  6. Step 6: Final answer
    x = 79,144.02

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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.