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Finding the Fourth Proportional to 178,280.88, 245,983.55 and 105,700.80

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Solution

The fourth proportional to 178,280.88, 245,983.55 and 105,700.80 is: 145,840.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,280.88 : 245,983.55 = 105,700.80 : x
  2. Step 2: Convert to fraction form
    178,280.88/245,983.55 = 105,700.80/x
  3. Step 3: Cross multiply
    178,280.88x = 245,983.55 × 105,700.80
  4. Step 4: Simplify right side
    178,280.88x = 26,000,658,021.84
  5. Step 5: Solve for x
    x = 26,000,658,021.84/178,280.88
  6. Step 6: Final answer
    x = 145,840.98

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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.