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Finding the Fourth Proportional to 157,075.56, 216,757.89 and 85,455.63

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Solution

The fourth proportional to 157,075.56, 216,757.89 and 85,455.63 is: 117,925.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,075.56 : 216,757.89 = 85,455.63 : x
  2. Step 2: Convert to fraction form
    157,075.56/216,757.89 = 85,455.63/x
  3. Step 3: Cross multiply
    157,075.56x = 216,757.89 × 85,455.63
  4. Step 4: Simplify right side
    157,075.56x = 18,523,182,047.42
  5. Step 5: Solve for x
    x = 18,523,182,047.42/157,075.56
  6. Step 6: Final answer
    x = 117,925.30

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1.5x scale

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.