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Finding the Fourth Proportional to 98,998.35, 148,498.76 and 65,478.93

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Solution

The fourth proportional to 98,998.35, 148,498.76 and 65,478.93 is: 98,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,998.35 : 148,498.76 = 65,478.93 : x
  2. Step 2: Convert to fraction form
    98,998.35/148,498.76 = 65,478.93/x
  3. Step 3: Cross multiply
    98,998.35x = 148,498.76 × 65,478.93
  4. Step 4: Simplify right side
    98,998.35x = 9,723,539,168.63
  5. Step 5: Solve for x
    x = 9,723,539,168.63/98,998.35
  6. Step 6: Final answer
    x = 98,219.21

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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.