Home / 208,123.10-287,210.77-112,629.79

Finding the Fourth Proportional to 208,123.10, 287,210.77 and 112,629.79

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Solution

The fourth proportional to 208,123.10, 287,210.77 and 112,629.79 is: 155,429.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,123.10 : 287,210.77 = 112,629.79 : x
  2. Step 2: Convert to fraction form
    208,123.10/287,210.77 = 112,629.79/x
  3. Step 3: Cross multiply
    208,123.10x = 287,210.77 × 112,629.79
  4. Step 4: Simplify right side
    208,123.10x = 32,348,488,788.28
  5. Step 5: Solve for x
    x = 32,348,488,788.28/208,123.10
  6. Step 6: Final answer
    x = 155,429.59

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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.