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Finding the Fourth Proportional to 144,628.80, 216,943.20 and 102,638.40

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Solution

The fourth proportional to 144,628.80, 216,943.20 and 102,638.40 is: 153,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,628.80 : 216,943.20 = 102,638.40 : x
  2. Step 2: Convert to fraction form
    144,628.80/216,943.20 = 102,638.40/x
  3. Step 3: Cross multiply
    144,628.80x = 216,943.20 × 102,638.40
  4. Step 4: Simplify right side
    144,628.80x = 22,266,702,938.88
  5. Step 5: Solve for x
    x = 22,266,702,938.88/144,628.80
  6. Step 6: Final answer
    x = 153,957.60

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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.