Home / 100,001.28-137,938.14-76,075.68

Finding the Fourth Proportional to 100,001.28, 137,938.14 and 76,075.68

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Solution

The fourth proportional to 100,001.28, 137,938.14 and 76,075.68 is: 104,936.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,001.28 : 137,938.14 = 76,075.68 : x
  2. Step 2: Convert to fraction form
    100,001.28/137,938.14 = 76,075.68/x
  3. Step 3: Cross multiply
    100,001.28x = 137,938.14 × 76,075.68
  4. Step 4: Simplify right side
    100,001.28x = 10,493,737,798.44
  5. Step 5: Solve for x
    x = 10,493,737,798.44/100,001.28
  6. Step 6: Final answer
    x = 104,936.03

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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.