Home / 105,783.10-145,990.12-58,045.74

Finding the Fourth Proportional to 105,783.10, 145,990.12 and 58,045.74

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Solution

The fourth proportional to 105,783.10, 145,990.12 and 58,045.74 is: 80,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,783.10 : 145,990.12 = 58,045.74 : x
  2. Step 2: Convert to fraction form
    105,783.10/145,990.12 = 58,045.74/x
  3. Step 3: Cross multiply
    105,783.10x = 145,990.12 × 58,045.74
  4. Step 4: Simplify right side
    105,783.10x = 8,474,104,548.09
  5. Step 5: Solve for x
    x = 8,474,104,548.09/105,783.10
  6. Step 6: Final answer
    x = 80,108.30

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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.