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Finding the Fourth Proportional to 155,499.60, 233,076.60 and 85,429.20

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Solution

The fourth proportional to 155,499.60, 233,076.60 and 85,429.20 is: 128,048.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,499.60 : 233,076.60 = 85,429.20 : x
  2. Step 2: Convert to fraction form
    155,499.60/233,076.60 = 85,429.20/x
  3. Step 3: Cross multiply
    155,499.60x = 233,076.60 × 85,429.20
  4. Step 4: Simplify right side
    155,499.60x = 19,911,547,476.72
  5. Step 5: Solve for x
    x = 19,911,547,476.72/155,499.60
  6. Step 6: Final answer
    x = 128,048.87

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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.