Home / 104,145.20-143,718.60-56,398.16

Finding the Fourth Proportional to 104,145.20, 143,718.60 and 56,398.16

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Solution

The fourth proportional to 104,145.20, 143,718.60 and 56,398.16 is: 77,828.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,145.20 : 143,718.60 = 56,398.16 : x
  2. Step 2: Convert to fraction form
    104,145.20/143,718.60 = 56,398.16/x
  3. Step 3: Cross multiply
    104,145.20x = 143,718.60 × 56,398.16
  4. Step 4: Simplify right side
    104,145.20x = 8,105,464,597.78
  5. Step 5: Solve for x
    x = 8,105,464,597.78/104,145.20
  6. Step 6: Final answer
    x = 77,828.50

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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.