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Finding the Fourth Proportional to 158,237.88, 218,431.28 and 103,810.76

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Solution

The fourth proportional to 158,237.88, 218,431.28 and 103,810.76 is: 143,300.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,237.88 : 218,431.28 = 103,810.76 : x
  2. Step 2: Convert to fraction form
    158,237.88/218,431.28 = 103,810.76/x
  3. Step 3: Cross multiply
    158,237.88x = 218,431.28 × 103,810.76
  4. Step 4: Simplify right side
    158,237.88x = 22,675,517,184.57
  5. Step 5: Solve for x
    x = 22,675,517,184.57/158,237.88
  6. Step 6: Final answer
    x = 143,300.18

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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.