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Finding the Fourth Proportional to 162,404.93, 243,678.61 and 77,077.42

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Solution

The fourth proportional to 162,404.93, 243,678.61 and 77,077.42 is: 115,649.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,404.93 : 243,678.61 = 77,077.42 : x
  2. Step 2: Convert to fraction form
    162,404.93/243,678.61 = 77,077.42/x
  3. Step 3: Cross multiply
    162,404.93x = 243,678.61 × 77,077.42
  4. Step 4: Simplify right side
    162,404.93x = 18,782,117,349.59
  5. Step 5: Solve for x
    x = 18,782,117,349.59/162,404.93
  6. Step 6: Final answer
    x = 115,649.92

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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.