Home / 105,320.36-145,328.06-67,645.64

Finding the Fourth Proportional to 105,320.36, 145,328.06 and 67,645.64

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Solution

The fourth proportional to 105,320.36, 145,328.06 and 67,645.64 is: 93,341.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,320.36 : 145,328.06 = 67,645.64 : x
  2. Step 2: Convert to fraction form
    105,320.36/145,328.06 = 67,645.64/x
  3. Step 3: Cross multiply
    105,320.36x = 145,328.06 × 67,645.64
  4. Step 4: Simplify right side
    105,320.36x = 9,830,809,628.66
  5. Step 5: Solve for x
    x = 9,830,809,628.66/105,320.36
  6. Step 6: Final answer
    x = 93,341.97

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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.