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Finding the Fourth Proportional to 157,678.84, 236,529.90 and 45,354.52

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Solution

The fourth proportional to 157,678.84, 236,529.90 and 45,354.52 is: 68,035.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,678.84 : 236,529.90 = 45,354.52 : x
  2. Step 2: Convert to fraction form
    157,678.84/236,529.90 = 45,354.52/x
  3. Step 3: Cross multiply
    157,678.84x = 236,529.90 × 45,354.52
  4. Step 4: Simplify right side
    157,678.84x = 10,727,700,080.15
  5. Step 5: Solve for x
    x = 10,727,700,080.15/157,678.84
  6. Step 6: Final answer
    x = 68,035.13

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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.