Home / 203,516.55-280,870.10-112,901.72

Finding the Fourth Proportional to 203,516.55, 280,870.10 and 112,901.72

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Solution

The fourth proportional to 203,516.55, 280,870.10 and 112,901.72 is: 155,813.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,516.55 : 280,870.10 = 112,901.72 : x
  2. Step 2: Convert to fraction form
    203,516.55/280,870.10 = 112,901.72/x
  3. Step 3: Cross multiply
    203,516.55x = 280,870.10 × 112,901.72
  4. Step 4: Simplify right side
    203,516.55x = 31,710,715,417.71
  5. Step 5: Solve for x
    x = 31,710,715,417.71/203,516.55
  6. Step 6: Final answer
    x = 155,813.94

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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.