Home / 153,890.18-212,201.04-100,075.40

Finding the Fourth Proportional to 153,890.18, 212,201.04 and 100,075.40

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Solution

The fourth proportional to 153,890.18, 212,201.04 and 100,075.40 is: 137,995.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,890.18 : 212,201.04 = 100,075.40 : x
  2. Step 2: Convert to fraction form
    153,890.18/212,201.04 = 100,075.40/x
  3. Step 3: Cross multiply
    153,890.18x = 212,201.04 × 100,075.40
  4. Step 4: Simplify right side
    153,890.18x = 21,236,103,958.42
  5. Step 5: Solve for x
    x = 21,236,103,958.42/153,890.18
  6. Step 6: Final answer
    x = 137,995.19

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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.