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Finding the Fourth Proportional to 171,402.95, 257,109.90 and 53,075.32

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Solution

The fourth proportional to 171,402.95, 257,109.90 and 53,075.32 is: 79,614.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,402.95 : 257,109.90 = 53,075.32 : x
  2. Step 2: Convert to fraction form
    171,402.95/257,109.90 = 53,075.32/x
  3. Step 3: Cross multiply
    171,402.95x = 257,109.90 × 53,075.32
  4. Step 4: Simplify right side
    171,402.95x = 13,646,189,375.86
  5. Step 5: Solve for x
    x = 13,646,189,375.86/171,402.95
  6. Step 6: Final answer
    x = 79,614.67

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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.