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Finding the Fourth Proportional to 103,437.58, 142,695.03 and 88,490.80

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Solution

The fourth proportional to 103,437.58, 142,695.03 and 88,490.80 is: 122,075.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,437.58 : 142,695.03 = 88,490.80 : x
  2. Step 2: Convert to fraction form
    103,437.58/142,695.03 = 88,490.80/x
  3. Step 3: Cross multiply
    103,437.58x = 142,695.03 × 88,490.80
  4. Step 4: Simplify right side
    103,437.58x = 12,627,197,360.72
  5. Step 5: Solve for x
    x = 12,627,197,360.72/103,437.58
  6. Step 6: Final answer
    x = 122,075.53

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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.