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Finding the Fourth Proportional to 163,920.87, 245,832.71 and 70,404.75

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Solution

The fourth proportional to 163,920.87, 245,832.71 and 70,404.75 is: 105,586.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,920.87 : 245,832.71 = 70,404.75 : x
  2. Step 2: Convert to fraction form
    163,920.87/245,832.71 = 70,404.75/x
  3. Step 3: Cross multiply
    163,920.87x = 245,832.71 × 70,404.75
  4. Step 4: Simplify right side
    163,920.87x = 17,307,790,137.35
  5. Step 5: Solve for x
    x = 17,307,790,137.35/163,920.87
  6. Step 6: Final answer
    x = 105,586.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.