Home / 155,278.29-214,291.64-87,316.66

Finding the Fourth Proportional to 155,278.29, 214,291.64 and 87,316.66

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Solution

The fourth proportional to 155,278.29, 214,291.64 and 87,316.66 is: 120,501.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,278.29 : 214,291.64 = 87,316.66 : x
  2. Step 2: Convert to fraction form
    155,278.29/214,291.64 = 87,316.66/x
  3. Step 3: Cross multiply
    155,278.29x = 214,291.64 × 87,316.66
  4. Step 4: Simplify right side
    155,278.29x = 18,711,228,762.68
  5. Step 5: Solve for x
    x = 18,711,228,762.68/155,278.29
  6. Step 6: Final answer
    x = 120,501.26

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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.