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Finding the Fourth Proportional to 144,043.40, 215,789.70 and 77,461.40

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Solution

The fourth proportional to 144,043.40, 215,789.70 and 77,461.40 is: 116,044.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,043.40 : 215,789.70 = 77,461.40 : x
  2. Step 2: Convert to fraction form
    144,043.40/215,789.70 = 77,461.40/x
  3. Step 3: Cross multiply
    144,043.40x = 215,789.70 × 77,461.40
  4. Step 4: Simplify right side
    144,043.40x = 16,715,372,267.58
  5. Step 5: Solve for x
    x = 16,715,372,267.58/144,043.40
  6. Step 6: Final answer
    x = 116,044.00

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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.