Home / 135,436.47-186,886.37-78,075.13

Finding the Fourth Proportional to 135,436.47, 186,886.37 and 78,075.13

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Solution

The fourth proportional to 135,436.47, 186,886.37 and 78,075.13 is: 107,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,436.47 : 186,886.37 = 78,075.13 : x
  2. Step 2: Convert to fraction form
    135,436.47/186,886.37 = 78,075.13/x
  3. Step 3: Cross multiply
    135,436.47x = 186,886.37 × 78,075.13
  4. Step 4: Simplify right side
    135,436.47x = 14,591,177,751.67
  5. Step 5: Solve for x
    x = 14,591,177,751.67/135,436.47
  6. Step 6: Final answer
    x = 107,734.48

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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.