Home / 98,075.98-135,340.76-55,642.51

Finding the Fourth Proportional to 98,075.98, 135,340.76 and 55,642.51

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Solution

The fourth proportional to 98,075.98, 135,340.76 and 55,642.51 is: 76,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,075.98 : 135,340.76 = 55,642.51 : x
  2. Step 2: Convert to fraction form
    98,075.98/135,340.76 = 55,642.51/x
  3. Step 3: Cross multiply
    98,075.98x = 135,340.76 × 55,642.51
  4. Step 4: Simplify right side
    98,075.98x = 7,530,698,636.79
  5. Step 5: Solve for x
    x = 7,530,698,636.79/98,075.98
  6. Step 6: Final answer
    x = 76,784.34

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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.