Home / 203,011.93-280,117.55-112,363.62

Finding the Fourth Proportional to 203,011.93, 280,117.55 and 112,363.62

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Solution

The fourth proportional to 203,011.93, 280,117.55 and 112,363.62 is: 155,040.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,011.93 : 280,117.55 = 112,363.62 : x
  2. Step 2: Convert to fraction form
    203,011.93/280,117.55 = 112,363.62/x
  3. Step 3: Cross multiply
    203,011.93x = 280,117.55 × 112,363.62
  4. Step 4: Simplify right side
    203,011.93x = 31,475,019,981.13
  5. Step 5: Solve for x
    x = 31,475,019,981.13/203,011.93
  6. Step 6: Final answer
    x = 155,040.25

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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.