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Finding the Fourth Proportional to 158,957.81, 219,270.53 and 99,238.13

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Solution

The fourth proportional to 158,957.81, 219,270.53 and 99,238.13 is: 136,891.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,957.81 : 219,270.53 = 99,238.13 : x
  2. Step 2: Convert to fraction form
    158,957.81/219,270.53 = 99,238.13/x
  3. Step 3: Cross multiply
    158,957.81x = 219,270.53 × 99,238.13
  4. Step 4: Simplify right side
    158,957.81x = 21,759,997,361.31
  5. Step 5: Solve for x
    x = 21,759,997,361.31/158,957.81
  6. Step 6: Final answer
    x = 136,891.65

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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.