Home / 208,279.10-287,425.09-112,785.77

Finding the Fourth Proportional to 208,279.10, 287,425.09 and 112,785.77

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Solution

The fourth proportional to 208,279.10, 287,425.09 and 112,785.77 is: 155,644.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,279.10 : 287,425.09 = 112,785.77 : x
  2. Step 2: Convert to fraction form
    208,279.10/287,425.09 = 112,785.77/x
  3. Step 3: Cross multiply
    208,279.10x = 287,425.09 × 112,785.77
  4. Step 4: Simplify right side
    208,279.10x = 32,417,460,952.51
  5. Step 5: Solve for x
    x = 32,417,460,952.51/208,279.10
  6. Step 6: Final answer
    x = 155,644.33

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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.