Home / 156,935.32-216,561.55-85,314.72

Finding the Fourth Proportional to 156,935.32, 216,561.55 and 85,314.72

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Solution

The fourth proportional to 156,935.32, 216,561.55 and 85,314.72 is: 117,729.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,935.32 : 216,561.55 = 85,314.72 : x
  2. Step 2: Convert to fraction form
    156,935.32/216,561.55 = 85,314.72/x
  3. Step 3: Cross multiply
    156,935.32x = 216,561.55 × 85,314.72
  4. Step 4: Simplify right side
    156,935.32x = 18,475,887,541.64
  5. Step 5: Solve for x
    x = 18,475,887,541.64/156,935.32
  6. Step 6: Final answer
    x = 117,729.31

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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.