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Finding the Fourth Proportional to 102,762.70, 154,156.42 and 36,189.08

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Solution

The fourth proportional to 102,762.70, 154,156.42 and 36,189.08 is: 54,287.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,762.70 : 154,156.42 = 36,189.08 : x
  2. Step 2: Convert to fraction form
    102,762.70/154,156.42 = 36,189.08/x
  3. Step 3: Cross multiply
    102,762.70x = 154,156.42 × 36,189.08
  4. Step 4: Simplify right side
    102,762.70x = 5,578,779,015.89
  5. Step 5: Solve for x
    x = 5,578,779,015.89/102,762.70
  6. Step 6: Final answer
    x = 54,287.98

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1.5x scale

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.