Home / 157,431.14-217,252.77-85,811.45

Finding the Fourth Proportional to 157,431.14, 217,252.77 and 85,811.45

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Solution

The fourth proportional to 157,431.14, 217,252.77 and 85,811.45 is: 118,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,431.14 : 217,252.77 = 85,811.45 : x
  2. Step 2: Convert to fraction form
    157,431.14/217,252.77 = 85,811.45/x
  3. Step 3: Cross multiply
    157,431.14x = 217,252.77 × 85,811.45
  4. Step 4: Simplify right side
    157,431.14x = 18,642,773,802.16
  5. Step 5: Solve for x
    x = 18,642,773,802.16/157,431.14
  6. Step 6: Final answer
    x = 118,418.59

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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.