Home / 156,869.09-216,476.50-85,249.36

Finding the Fourth Proportional to 156,869.09, 216,476.50 and 85,249.36

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Solution

The fourth proportional to 156,869.09, 216,476.50 and 85,249.36 is: 117,642.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,869.09 : 216,476.50 = 85,249.36 : x
  2. Step 2: Convert to fraction form
    156,869.09/216,476.50 = 85,249.36/x
  3. Step 3: Cross multiply
    156,869.09x = 216,476.50 × 85,249.36
  4. Step 4: Simplify right side
    156,869.09x = 18,454,483,080.04
  5. Step 5: Solve for x
    x = 18,454,483,080.04/156,869.09
  6. Step 6: Final answer
    x = 117,642.57

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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.