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Finding the Fourth Proportional to 183,840.80, 253,690.80 and 103,271.72

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Solution

The fourth proportional to 183,840.80, 253,690.80 and 103,271.72 is: 142,509.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,840.80 : 253,690.80 = 103,271.72 : x
  2. Step 2: Convert to fraction form
    183,840.80/253,690.80 = 103,271.72/x
  3. Step 3: Cross multiply
    183,840.80x = 253,690.80 × 103,271.72
  4. Step 4: Simplify right side
    183,840.80x = 26,199,085,264.18
  5. Step 5: Solve for x
    x = 26,199,085,264.18/183,840.80
  6. Step 6: Final answer
    x = 142,509.63

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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.