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Finding the Fourth Proportional to 166,075.20, 249,112.80 and 112,931.10

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Solution

The fourth proportional to 166,075.20, 249,112.80 and 112,931.10 is: 169,396.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,075.20 : 249,112.80 = 112,931.10 : x
  2. Step 2: Convert to fraction form
    166,075.20/249,112.80 = 112,931.10/x
  3. Step 3: Cross multiply
    166,075.20x = 249,112.80 × 112,931.10
  4. Step 4: Simplify right side
    166,075.20x = 28,132,582,528.08
  5. Step 5: Solve for x
    x = 28,132,582,528.08/166,075.20
  6. Step 6: Final answer
    x = 169,396.65

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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.