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Finding the Fourth Proportional to 178,978.68, 246,988.36 and 98,405.51

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Solution

The fourth proportional to 178,978.68, 246,988.36 and 98,405.51 is: 135,798.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,978.68 : 246,988.36 = 98,405.51 : x
  2. Step 2: Convert to fraction form
    178,978.68/246,988.36 = 98,405.51/x
  3. Step 3: Cross multiply
    178,978.68x = 246,988.36 × 98,405.51
  4. Step 4: Simplify right side
    178,978.68x = 24,305,014,417.93
  5. Step 5: Solve for x
    x = 24,305,014,417.93/178,978.68
  6. Step 6: Final answer
    x = 135,798.38

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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.