Home / 145,516.57-200,810.80-81,854.35

Finding the Fourth Proportional to 145,516.57, 200,810.80 and 81,854.35

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Solution

The fourth proportional to 145,516.57, 200,810.80 and 81,854.35 is: 112,957.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,516.57 : 200,810.80 = 81,854.35 : x
  2. Step 2: Convert to fraction form
    145,516.57/200,810.80 = 81,854.35/x
  3. Step 3: Cross multiply
    145,516.57x = 200,810.80 × 81,854.35
  4. Step 4: Simplify right side
    145,516.57x = 16,437,237,506.98
  5. Step 5: Solve for x
    x = 16,437,237,506.98/145,516.57
  6. Step 6: Final answer
    x = 112,957.84

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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.