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Finding the Fourth Proportional to 508,725, 763,102.08 and 134,748

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Solution

The fourth proportional to 508,725, 763,102.08 and 134,748 is: 202,125.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,725 : 763,102.08 = 134,748 : x
  2. Step 2: Convert to fraction form
    508,725/763,102.08 = 134,748/x
  3. Step 3: Cross multiply
    508,725x = 763,102.08 × 134,748
  4. Step 4: Simplify right side
    508,725x = 102,826,479,075.84
  5. Step 5: Solve for x
    x = 102,826,479,075.84/508,725
  6. Step 6: Final answer
    x = 202,125.86

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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.