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Finding the Fourth Proportional to 155,591.55, 214,763.94 and 91,075.88

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Solution

The fourth proportional to 155,591.55, 214,763.94 and 91,075.88 is: 125,712.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,591.55 : 214,763.94 = 91,075.88 : x
  2. Step 2: Convert to fraction form
    155,591.55/214,763.94 = 91,075.88/x
  3. Step 3: Cross multiply
    155,591.55x = 214,763.94 × 91,075.88
  4. Step 4: Simplify right side
    155,591.55x = 19,559,814,827.77
  5. Step 5: Solve for x
    x = 19,559,814,827.77/155,591.55
  6. Step 6: Final answer
    x = 125,712.58

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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.