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Finding the Fourth Proportional to 165,818.50, 228,831.15 and 90,368.62

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Solution

The fourth proportional to 165,818.50, 228,831.15 and 90,368.62 is: 124,709.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,818.50 : 228,831.15 = 90,368.62 : x
  2. Step 2: Convert to fraction form
    165,818.50/228,831.15 = 90,368.62/x
  3. Step 3: Cross multiply
    165,818.50x = 228,831.15 × 90,368.62
  4. Step 4: Simplify right side
    165,818.50x = 20,679,155,238.51
  5. Step 5: Solve for x
    x = 20,679,155,238.51/165,818.50
  6. Step 6: Final answer
    x = 124,709.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.