Home / 104,239.84-143,844-66,510.08

Finding the Fourth Proportional to 104,239.84, 143,844 and 66,510.08

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Solution

The fourth proportional to 104,239.84, 143,844 and 66,510.08 is: 91,779.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,239.84 : 143,844 = 66,510.08 : x
  2. Step 2: Convert to fraction form
    104,239.84/143,844 = 66,510.08/x
  3. Step 3: Cross multiply
    104,239.84x = 143,844 × 66,510.08
  4. Step 4: Simplify right side
    104,239.84x = 9,567,075,947.52
  5. Step 5: Solve for x
    x = 9,567,075,947.52/104,239.84
  6. Step 6: Final answer
    x = 91,779.46

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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.