Home / 156,511.47-234,242.32-128,430.39

Finding the Fourth Proportional to 156,511.47, 234,242.32 and 128,430.39

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Solution

The fourth proportional to 156,511.47, 234,242.32 and 128,430.39 is: 192,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,511.47 : 234,242.32 = 128,430.39 : x
  2. Step 2: Convert to fraction form
    156,511.47/234,242.32 = 128,430.39/x
  3. Step 3: Cross multiply
    156,511.47x = 234,242.32 × 128,430.39
  4. Step 4: Simplify right side
    156,511.47x = 30,083,832,512.10
  5. Step 5: Solve for x
    x = 30,083,832,512.10/156,511.47
  6. Step 6: Final answer
    x = 192,214.87

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1.5x scale

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.