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Finding the Fourth Proportional to 102,798.60, 141,783.80 and 88,482.80

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Solution

The fourth proportional to 102,798.60, 141,783.80 and 88,482.80 is: 122,038.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,798.60 : 141,783.80 = 88,482.80 : x
  2. Step 2: Convert to fraction form
    102,798.60/141,783.80 = 88,482.80/x
  3. Step 3: Cross multiply
    102,798.60x = 141,783.80 × 88,482.80
  4. Step 4: Simplify right side
    102,798.60x = 12,545,426,467.31
  5. Step 5: Solve for x
    x = 12,545,426,467.31/102,798.60
  6. Step 6: Final answer
    x = 122,038.88

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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.