Home / 155,698.64-214,070.50-138,537.20

Finding the Fourth Proportional to 155,698.64, 214,070.50 and 138,537.20

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Solution

The fourth proportional to 155,698.64, 214,070.50 and 138,537.20 is: 190,475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,698.64 : 214,070.50 = 138,537.20 : x
  2. Step 2: Convert to fraction form
    155,698.64/214,070.50 = 138,537.20/x
  3. Step 3: Cross multiply
    155,698.64x = 214,070.50 × 138,537.20
  4. Step 4: Simplify right side
    155,698.64x = 29,656,727,672.60
  5. Step 5: Solve for x
    x = 29,656,727,672.60/155,698.64
  6. Step 6: Final answer
    x = 190,475.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.