Home / 156,981.24-216,633.60-85,361.40

Finding the Fourth Proportional to 156,981.24, 216,633.60 and 85,361.40

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Solution

The fourth proportional to 156,981.24, 216,633.60 and 85,361.40 is: 117,798.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,981.24 : 216,633.60 = 85,361.40 : x
  2. Step 2: Convert to fraction form
    156,981.24/216,633.60 = 85,361.40/x
  3. Step 3: Cross multiply
    156,981.24x = 216,633.60 × 85,361.40
  4. Step 4: Simplify right side
    156,981.24x = 18,492,147,383.04
  5. Step 5: Solve for x
    x = 18,492,147,383.04/156,981.24
  6. Step 6: Final answer
    x = 117,798.45

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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.