Home / 112,965.77-155,764.93-72,075.18

Finding the Fourth Proportional to 112,965.77, 155,764.93 and 72,075.18

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Solution

The fourth proportional to 112,965.77, 155,764.93 and 72,075.18 is: 99,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,965.77 : 155,764.93 = 72,075.18 : x
  2. Step 2: Convert to fraction form
    112,965.77/155,764.93 = 72,075.18/x
  3. Step 3: Cross multiply
    112,965.77x = 155,764.93 × 72,075.18
  4. Step 4: Simplify right side
    112,965.77x = 11,226,785,367.44
  5. Step 5: Solve for x
    x = 11,226,785,367.44/112,965.77
  6. Step 6: Final answer
    x = 99,382.19

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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.