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Finding the Fourth Proportional to 142,013.44, 212,907.90 and 70,899.58

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Solution

The fourth proportional to 142,013.44, 212,907.90 and 70,899.58 is: 106,293.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,013.44 : 212,907.90 = 70,899.58 : x
  2. Step 2: Convert to fraction form
    142,013.44/212,907.90 = 70,899.58/x
  3. Step 3: Cross multiply
    142,013.44x = 212,907.90 × 70,899.58
  4. Step 4: Simplify right side
    142,013.44x = 15,095,080,688.68
  5. Step 5: Solve for x
    x = 15,095,080,688.68/142,013.44
  6. Step 6: Final answer
    x = 106,293.32

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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.