Home / 156,256.71-215,618.85-87,333.45

Finding the Fourth Proportional to 156,256.71, 215,618.85 and 87,333.45

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Solution

The fourth proportional to 156,256.71, 215,618.85 and 87,333.45 is: 120,511.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,256.71 : 215,618.85 = 87,333.45 : x
  2. Step 2: Convert to fraction form
    156,256.71/215,618.85 = 87,333.45/x
  3. Step 3: Cross multiply
    156,256.71x = 215,618.85 × 87,333.45
  4. Step 4: Simplify right side
    156,256.71x = 18,830,738,055.53
  5. Step 5: Solve for x
    x = 18,830,738,055.53/156,256.71
  6. Step 6: Final answer
    x = 120,511.55

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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.