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Finding the Fourth Proportional to 158,953.40, 238,235.70 and 70,112.60

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Solution

The fourth proportional to 158,953.40, 238,235.70 and 70,112.60 is: 105,083.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,953.40 : 238,235.70 = 70,112.60 : x
  2. Step 2: Convert to fraction form
    158,953.40/238,235.70 = 70,112.60/x
  3. Step 3: Cross multiply
    158,953.40x = 238,235.70 × 70,112.60
  4. Step 4: Simplify right side
    158,953.40x = 16,703,324,339.82
  5. Step 5: Solve for x
    x = 16,703,324,339.82/158,953.40
  6. Step 6: Final answer
    x = 105,083.15

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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.