Home / 211,355.76-317,075.08-78,237.16

Finding the Fourth Proportional to 211,355.76, 317,075.08 and 78,237.16

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Solution

The fourth proportional to 211,355.76, 317,075.08 and 78,237.16 is: 117,371.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,355.76 : 317,075.08 = 78,237.16 : x
  2. Step 2: Convert to fraction form
    211,355.76/317,075.08 = 78,237.16/x
  3. Step 3: Cross multiply
    211,355.76x = 317,075.08 × 78,237.16
  4. Step 4: Simplify right side
    211,355.76x = 24,807,053,765.97
  5. Step 5: Solve for x
    x = 24,807,053,765.97/211,355.76
  6. Step 6: Final answer
    x = 117,371.08

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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.