Home / 105,612.03-145,743.75-57,212.91

Finding the Fourth Proportional to 105,612.03, 145,743.75 and 57,212.91

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Solution

The fourth proportional to 105,612.03, 145,743.75 and 57,212.91 is: 78,953.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,612.03 : 145,743.75 = 57,212.91 : x
  2. Step 2: Convert to fraction form
    105,612.03/145,743.75 = 57,212.91/x
  3. Step 3: Cross multiply
    105,612.03x = 145,743.75 × 57,212.91
  4. Step 4: Simplify right side
    105,612.03x = 8,338,424,051.81
  5. Step 5: Solve for x
    x = 8,338,424,051.81/105,612.03
  6. Step 6: Final answer
    x = 78,953.35

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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.