Home / 156,033.02-215,323.47-87,123.56

Finding the Fourth Proportional to 156,033.02, 215,323.47 and 87,123.56

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Solution

The fourth proportional to 156,033.02, 215,323.47 and 87,123.56 is: 120,229.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,033.02 : 215,323.47 = 87,123.56 : x
  2. Step 2: Convert to fraction form
    156,033.02/215,323.47 = 87,123.56/x
  3. Step 3: Cross multiply
    156,033.02x = 215,323.47 × 87,123.56
  4. Step 4: Simplify right side
    156,033.02x = 18,759,746,181.34
  5. Step 5: Solve for x
    x = 18,759,746,181.34/156,033.02
  6. Step 6: Final answer
    x = 120,229.33

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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.