Home / 208,001.20-287,041.68-112,507.84

Finding the Fourth Proportional to 208,001.20, 287,041.68 and 112,507.84

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Solution

The fourth proportional to 208,001.20, 287,041.68 and 112,507.84 is: 155,260.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,001.20 : 287,041.68 = 112,507.84 : x
  2. Step 2: Convert to fraction form
    208,001.20/287,041.68 = 112,507.84/x
  3. Step 3: Cross multiply
    208,001.20x = 287,041.68 × 112,507.84
  4. Step 4: Simplify right side
    208,001.20x = 32,294,439,406.77
  5. Step 5: Solve for x
    x = 32,294,439,406.77/208,001.20
  6. Step 6: Final answer
    x = 155,260.83

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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.