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Finding the Fourth Proportional to 155,590.82, 214,762.94 and 91,075.16

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Solution

The fourth proportional to 155,590.82, 214,762.94 and 91,075.16 is: 125,711.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,590.82 : 214,762.94 = 91,075.16 : x
  2. Step 2: Convert to fraction form
    155,590.82/214,762.94 = 91,075.16/x
  3. Step 3: Cross multiply
    155,590.82x = 214,762.94 × 91,075.16
  4. Step 4: Simplify right side
    155,590.82x = 19,559,569,887.17
  5. Step 5: Solve for x
    x = 19,559,569,887.17/155,590.82
  6. Step 6: Final answer
    x = 125,711.59

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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.