Home / 156,988.36-234,967.74-85,801.96

Finding the Fourth Proportional to 156,988.36, 234,967.74 and 85,801.96

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Solution

The fourth proportional to 156,988.36, 234,967.74 and 85,801.96 is: 128,421.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,988.36 : 234,967.74 = 85,801.96 : x
  2. Step 2: Convert to fraction form
    156,988.36/234,967.74 = 85,801.96/x
  3. Step 3: Cross multiply
    156,988.36x = 234,967.74 × 85,801.96
  4. Step 4: Simplify right side
    156,988.36x = 20,160,692,628.77
  5. Step 5: Solve for x
    x = 20,160,692,628.77/156,988.36
  6. Step 6: Final answer
    x = 128,421.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.