Home / 105,212.14-145,192.75-57,465.60

Finding the Fourth Proportional to 105,212.14, 145,192.75 and 57,465.60

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Solution

The fourth proportional to 105,212.14, 145,192.75 and 57,465.60 is: 79,302.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,212.14 : 145,192.75 = 57,465.60 : x
  2. Step 2: Convert to fraction form
    105,212.14/145,192.75 = 57,465.60/x
  3. Step 3: Cross multiply
    105,212.14x = 145,192.75 × 57,465.60
  4. Step 4: Simplify right side
    105,212.14x = 8,343,587,806.26
  5. Step 5: Solve for x
    x = 8,343,587,806.26/105,212.14
  6. Step 6: Final answer
    x = 79,302.52

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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.