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Finding the Fourth Proportional to 155,439.60, 233,005.80 and 61,820.40

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Solution

The fourth proportional to 155,439.60, 233,005.80 and 61,820.40 is: 92,669.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,439.60 : 233,005.80 = 61,820.40 : x
  2. Step 2: Convert to fraction form
    155,439.60/233,005.80 = 61,820.40/x
  3. Step 3: Cross multiply
    155,439.60x = 233,005.80 × 61,820.40
  4. Step 4: Simplify right side
    155,439.60x = 14,404,511,758.32
  5. Step 5: Solve for x
    x = 14,404,511,758.32/155,439.60
  6. Step 6: Final answer
    x = 92,669.51

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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.