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Finding the Fourth Proportional to 155,130.98, 232,639 and 55,264.64

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Solution

The fourth proportional to 155,130.98, 232,639 and 55,264.64 is: 82,876.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,130.98 : 232,639 = 55,264.64 : x
  2. Step 2: Convert to fraction form
    155,130.98/232,639 = 55,264.64/x
  3. Step 3: Cross multiply
    155,130.98x = 232,639 × 55,264.64
  4. Step 4: Simplify right side
    155,130.98x = 12,856,710,584.96
  5. Step 5: Solve for x
    x = 12,856,710,584.96/155,130.98
  6. Step 6: Final answer
    x = 82,876.49

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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.