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Finding the Fourth Proportional to 144,700.55, 199,689.50 and 81,038.19

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Solution

The fourth proportional to 144,700.55, 199,689.50 and 81,038.19 is: 111,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,700.55 : 199,689.50 = 81,038.19 : x
  2. Step 2: Convert to fraction form
    144,700.55/199,689.50 = 81,038.19/x
  3. Step 3: Cross multiply
    144,700.55x = 199,689.50 × 81,038.19
  4. Step 4: Simplify right side
    144,700.55x = 16,182,475,236.81
  5. Step 5: Solve for x
    x = 16,182,475,236.81/144,700.55
  6. Step 6: Final answer
    x = 111,834.24

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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.