Home / 105,486.89-145,543.11-60,148.34

Finding the Fourth Proportional to 105,486.89, 145,543.11 and 60,148.34

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Solution

The fourth proportional to 105,486.89, 145,543.11 and 60,148.34 is: 82,988.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,486.89 : 145,543.11 = 60,148.34 : x
  2. Step 2: Convert to fraction form
    105,486.89/145,543.11 = 60,148.34/x
  3. Step 3: Cross multiply
    105,486.89x = 145,543.11 × 60,148.34
  4. Step 4: Simplify right side
    105,486.89x = 8,754,176,464.94
  5. Step 5: Solve for x
    x = 8,754,176,464.94/105,486.89
  6. Step 6: Final answer
    x = 82,988.29

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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.