Home / 203,417.12-280,707.36-112,774.40

Finding the Fourth Proportional to 203,417.12, 280,707.36 and 112,774.40

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Solution

The fourth proportional to 203,417.12, 280,707.36 and 112,774.40 is: 155,624.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,417.12 : 280,707.36 = 112,774.40 : x
  2. Step 2: Convert to fraction form
    203,417.12/280,707.36 = 112,774.40/x
  3. Step 3: Cross multiply
    203,417.12x = 280,707.36 × 112,774.40
  4. Step 4: Simplify right side
    203,417.12x = 31,656,604,099.58
  5. Step 5: Solve for x
    x = 31,656,604,099.58/203,417.12
  6. Step 6: Final answer
    x = 155,624.09

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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.