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Finding the Fourth Proportional to 119,075.64, 178,654.68 and 79,254.48

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Solution

The fourth proportional to 119,075.64, 178,654.68 and 79,254.48 is: 118,909.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,075.64 : 178,654.68 = 79,254.48 : x
  2. Step 2: Convert to fraction form
    119,075.64/178,654.68 = 79,254.48/x
  3. Step 3: Cross multiply
    119,075.64x = 178,654.68 × 79,254.48
  4. Step 4: Simplify right side
    119,075.64x = 14,159,183,762.97
  5. Step 5: Solve for x
    x = 14,159,183,762.97/119,075.64
  6. Step 6: Final answer
    x = 118,909.16

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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.