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Finding the Fourth Proportional to 161,695.72, 223,146.81 and 90,075.72

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Solution

The fourth proportional to 161,695.72, 223,146.81 and 90,075.72 is: 124,308.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,695.72 : 223,146.81 = 90,075.72 : x
  2. Step 2: Convert to fraction form
    161,695.72/223,146.81 = 90,075.72/x
  3. Step 3: Cross multiply
    161,695.72x = 223,146.81 × 90,075.72
  4. Step 4: Simplify right side
    161,695.72x = 20,100,109,576.45
  5. Step 5: Solve for x
    x = 20,100,109,576.45/161,695.72
  6. Step 6: Final answer
    x = 124,308.24

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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.