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Finding the Fourth Proportional to 144,085.79, 216,139.07 and 55,339.29

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Solution

The fourth proportional to 144,085.79, 216,139.07 and 55,339.29 is: 83,012.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,085.79 : 216,139.07 = 55,339.29 : x
  2. Step 2: Convert to fraction form
    144,085.79/216,139.07 = 55,339.29/x
  3. Step 3: Cross multiply
    144,085.79x = 216,139.07 × 55,339.29
  4. Step 4: Simplify right side
    144,085.79x = 11,960,982,675.06
  5. Step 5: Solve for x
    x = 11,960,982,675.06/144,085.79
  6. Step 6: Final answer
    x = 83,012.92

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1.5x scale

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.