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Finding the Fourth Proportional to 130,772.88, 180,479.88 and 77,075.22

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Solution

The fourth proportional to 130,772.88, 180,479.88 and 77,075.22 is: 106,371.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,772.88 : 180,479.88 = 77,075.22 : x
  2. Step 2: Convert to fraction form
    130,772.88/180,479.88 = 77,075.22/x
  3. Step 3: Cross multiply
    130,772.88x = 180,479.88 × 77,075.22
  4. Step 4: Simplify right side
    130,772.88x = 13,910,526,456.57
  5. Step 5: Solve for x
    x = 13,910,526,456.57/130,772.88
  6. Step 6: Final answer
    x = 106,371.65

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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.