Home / 130,830.09-180,498.29-74,208.66

Finding the Fourth Proportional to 130,830.09, 180,498.29 and 74,208.66

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Solution

The fourth proportional to 130,830.09, 180,498.29 and 74,208.66 is: 102,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,830.09 : 180,498.29 = 74,208.66 : x
  2. Step 2: Convert to fraction form
    130,830.09/180,498.29 = 74,208.66/x
  3. Step 3: Cross multiply
    130,830.09x = 180,498.29 × 74,208.66
  4. Step 4: Simplify right side
    130,830.09x = 13,394,535,862.15
  5. Step 5: Solve for x
    x = 13,394,535,862.15/130,830.09
  6. Step 6: Final answer
    x = 102,381.16

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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.