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Finding the Fourth Proportional to 146,011.51, 218,963.80 and 71,109.19

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Solution

The fourth proportional to 146,011.51, 218,963.80 and 71,109.19 is: 106,637.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,011.51 : 218,963.80 = 71,109.19 : x
  2. Step 2: Convert to fraction form
    146,011.51/218,963.80 = 71,109.19/x
  3. Step 3: Cross multiply
    146,011.51x = 218,963.80 × 71,109.19
  4. Step 4: Simplify right side
    146,011.51x = 15,570,338,457.32
  5. Step 5: Solve for x
    x = 15,570,338,457.32/146,011.51
  6. Step 6: Final answer
    x = 106,637.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.