Home / 156,749.97-216,316.23-85,130.51

Finding the Fourth Proportional to 156,749.97, 216,316.23 and 85,130.51

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Solution

The fourth proportional to 156,749.97, 216,316.23 and 85,130.51 is: 117,480.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,749.97 : 216,316.23 = 85,130.51 : x
  2. Step 2: Convert to fraction form
    156,749.97/216,316.23 = 85,130.51/x
  3. Step 3: Cross multiply
    156,749.97x = 216,316.23 × 85,130.51
  4. Step 4: Simplify right side
    156,749.97x = 18,415,110,112.42
  5. Step 5: Solve for x
    x = 18,415,110,112.42/156,749.97
  6. Step 6: Final answer
    x = 117,480.79

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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.