Home / 208,134.09-287,225.03-112,640.81

Finding the Fourth Proportional to 208,134.09, 287,225.03 and 112,640.81

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Solution

The fourth proportional to 208,134.09, 287,225.03 and 112,640.81 is: 155,444.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,134.09 : 287,225.03 = 112,640.81 : x
  2. Step 2: Convert to fraction form
    208,134.09/287,225.03 = 112,640.81/x
  3. Step 3: Cross multiply
    208,134.09x = 287,225.03 × 112,640.81
  4. Step 4: Simplify right side
    208,134.09x = 32,353,258,032.15
  5. Step 5: Solve for x
    x = 32,353,258,032.15/208,134.09
  6. Step 6: Final answer
    x = 155,444.30

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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.