Home / 142,075.06-212,962.64-47,279.75

Finding the Fourth Proportional to 142,075.06, 212,962.64 and 47,279.75

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Solution

The fourth proportional to 142,075.06, 212,962.64 and 47,279.75 is: 70,869.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,075.06 : 212,962.64 = 47,279.75 : x
  2. Step 2: Convert to fraction form
    142,075.06/212,962.64 = 47,279.75/x
  3. Step 3: Cross multiply
    142,075.06x = 212,962.64 × 47,279.75
  4. Step 4: Simplify right side
    142,075.06x = 10,068,819,077.33
  5. Step 5: Solve for x
    x = 10,068,819,077.33/142,075.06
  6. Step 6: Final answer
    x = 70,869.72

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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.