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Finding the Fourth Proportional to 153,094.86, 211,374 and 136,911.96

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Solution

The fourth proportional to 153,094.86, 211,374 and 136,911.96 is: 189,030.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,094.86 : 211,374 = 136,911.96 : x
  2. Step 2: Convert to fraction form
    153,094.86/211,374 = 136,911.96/x
  3. Step 3: Cross multiply
    153,094.86x = 211,374 × 136,911.96
  4. Step 4: Simplify right side
    153,094.86x = 28,939,628,633.04
  5. Step 5: Solve for x
    x = 28,939,628,633.04/153,094.86
  6. Step 6: Final answer
    x = 189,030.70

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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.