Home / 156,898.06-216,520.65-85,278.07

Finding the Fourth Proportional to 156,898.06, 216,520.65 and 85,278.07

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Solution

The fourth proportional to 156,898.06, 216,520.65 and 85,278.07 is: 117,684.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,898.06 : 216,520.65 = 85,278.07 : x
  2. Step 2: Convert to fraction form
    156,898.06/216,520.65 = 85,278.07/x
  3. Step 3: Cross multiply
    156,898.06x = 216,520.65 × 85,278.07
  4. Step 4: Simplify right side
    156,898.06x = 18,464,463,147.15
  5. Step 5: Solve for x
    x = 18,464,463,147.15/156,898.06
  6. Step 6: Final answer
    x = 117,684.46

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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.