Home / 151,541.07-209,085.66-86,128.98

Finding the Fourth Proportional to 151,541.07, 209,085.66 and 86,128.98

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Solution

The fourth proportional to 151,541.07, 209,085.66 and 86,128.98 is: 118,834.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,541.07 : 209,085.66 = 86,128.98 : x
  2. Step 2: Convert to fraction form
    151,541.07/209,085.66 = 86,128.98/x
  3. Step 3: Cross multiply
    151,541.07x = 209,085.66 × 86,128.98
  4. Step 4: Simplify right side
    151,541.07x = 18,008,334,628.43
  5. Step 5: Solve for x
    x = 18,008,334,628.43/151,541.07
  6. Step 6: Final answer
    x = 118,834.68

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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.