Home / 210,075.12-315,117-117,172.08

Finding the Fourth Proportional to 210,075.12, 315,117 and 117,172.08

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Solution

The fourth proportional to 210,075.12, 315,117 and 117,172.08 is: 175,760.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,075.12 : 315,117 = 117,172.08 : x
  2. Step 2: Convert to fraction form
    210,075.12/315,117 = 117,172.08/x
  3. Step 3: Cross multiply
    210,075.12x = 315,117 × 117,172.08
  4. Step 4: Simplify right side
    210,075.12x = 36,922,914,333.36
  5. Step 5: Solve for x
    x = 36,922,914,333.36/210,075.12
  6. Step 6: Final answer
    x = 175,760.53

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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.