Home / 142,084.50-196,075.62-78,422.28

Finding the Fourth Proportional to 142,084.50, 196,075.62 and 78,422.28

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Solution

The fourth proportional to 142,084.50, 196,075.62 and 78,422.28 is: 108,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,084.50 : 196,075.62 = 78,422.28 : x
  2. Step 2: Convert to fraction form
    142,084.50/196,075.62 = 78,422.28/x
  3. Step 3: Cross multiply
    142,084.50x = 196,075.62 × 78,422.28
  4. Step 4: Simplify right side
    142,084.50x = 15,376,697,172.81
  5. Step 5: Solve for x
    x = 15,376,697,172.81/142,084.50
  6. Step 6: Final answer
    x = 108,222.20

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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.