Home / 98,710.28-136,219.78-53,388.31

Finding the Fourth Proportional to 98,710.28, 136,219.78 and 53,388.31

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Solution

The fourth proportional to 98,710.28, 136,219.78 and 53,388.31 is: 73,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,710.28 : 136,219.78 = 53,388.31 : x
  2. Step 2: Convert to fraction form
    98,710.28/136,219.78 = 53,388.31/x
  3. Step 3: Cross multiply
    98,710.28x = 136,219.78 × 53,388.31
  4. Step 4: Simplify right side
    98,710.28x = 7,272,543,842.77
  5. Step 5: Solve for x
    x = 7,272,543,842.77/98,710.28
  6. Step 6: Final answer
    x = 73,675.65

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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.