Home / 208,108.05-287,189.87-112,614.74

Finding the Fourth Proportional to 208,108.05, 287,189.87 and 112,614.74

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Solution

The fourth proportional to 208,108.05, 287,189.87 and 112,614.74 is: 155,408.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,108.05 : 287,189.87 = 112,614.74 : x
  2. Step 2: Convert to fraction form
    208,108.05/287,189.87 = 112,614.74/x
  3. Step 3: Cross multiply
    208,108.05x = 287,189.87 × 112,614.74
  4. Step 4: Simplify right side
    208,108.05x = 32,341,810,541.66
  5. Step 5: Solve for x
    x = 32,341,810,541.66/208,108.05
  6. Step 6: Final answer
    x = 155,408.74

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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.