Home / 98,420.04-135,818.88-55,978.56

Finding the Fourth Proportional to 98,420.04, 135,818.88 and 55,978.56

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Solution

The fourth proportional to 98,420.04, 135,818.88 and 55,978.56 is: 77,249.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,420.04 : 135,818.88 = 55,978.56 : x
  2. Step 2: Convert to fraction form
    98,420.04/135,818.88 = 55,978.56/x
  3. Step 3: Cross multiply
    98,420.04x = 135,818.88 × 55,978.56
  4. Step 4: Simplify right side
    98,420.04x = 7,602,945,323.21
  5. Step 5: Solve for x
    x = 7,602,945,323.21/98,420.04
  6. Step 6: Final answer
    x = 77,249.97

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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.