Home / 157,941.10-217,955.48-86,321.63

Finding the Fourth Proportional to 157,941.10, 217,955.48 and 86,321.63

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Solution

The fourth proportional to 157,941.10, 217,955.48 and 86,321.63 is: 119,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,941.10 : 217,955.48 = 86,321.63 : x
  2. Step 2: Convert to fraction form
    157,941.10/217,955.48 = 86,321.63/x
  3. Step 3: Cross multiply
    157,941.10x = 217,955.48 × 86,321.63
  4. Step 4: Simplify right side
    157,941.10x = 18,814,272,301.03
  5. Step 5: Solve for x
    x = 18,814,272,301.03/157,941.10
  6. Step 6: Final answer
    x = 119,122.08

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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.