Home / 130,666.68-180,234-103,766.52

Finding the Fourth Proportional to 130,666.68, 180,234 and 103,766.52

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Solution

The fourth proportional to 130,666.68, 180,234 and 103,766.52 is: 143,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,666.68 : 180,234 = 103,766.52 : x
  2. Step 2: Convert to fraction form
    130,666.68/180,234 = 103,766.52/x
  3. Step 3: Cross multiply
    130,666.68x = 180,234 × 103,766.52
  4. Step 4: Simplify right side
    130,666.68x = 18,702,254,965.68
  5. Step 5: Solve for x
    x = 18,702,254,965.68/130,666.68
  6. Step 6: Final answer
    x = 143,129.49

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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.