Home / 121,265.61-181,837.42-70,680.89

Finding the Fourth Proportional to 121,265.61, 181,837.42 and 70,680.89

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Solution

The fourth proportional to 121,265.61, 181,837.42 and 70,680.89 is: 105,985.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,265.61 : 181,837.42 = 70,680.89 : x
  2. Step 2: Convert to fraction form
    121,265.61/181,837.42 = 70,680.89/x
  3. Step 3: Cross multiply
    121,265.61x = 181,837.42 × 70,680.89
  4. Step 4: Simplify right side
    121,265.61x = 12,852,430,327.50
  5. Step 5: Solve for x
    x = 12,852,430,327.50/121,265.61
  6. Step 6: Final answer
    x = 105,985.78

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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.