Home / 208,513.47-312,657.75-112,502.13

Finding the Fourth Proportional to 208,513.47, 312,657.75 and 112,502.13

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Solution

The fourth proportional to 208,513.47, 312,657.75 and 112,502.13 is: 168,692.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,513.47 : 312,657.75 = 112,502.13 : x
  2. Step 2: Convert to fraction form
    208,513.47/312,657.75 = 112,502.13/x
  3. Step 3: Cross multiply
    208,513.47x = 312,657.75 × 112,502.13
  4. Step 4: Simplify right side
    208,513.47x = 35,174,662,836.01
  5. Step 5: Solve for x
    x = 35,174,662,836.01/208,513.47
  6. Step 6: Final answer
    x = 168,692.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.