Home / 105,235.10-145,222.80-57,487.52

Finding the Fourth Proportional to 105,235.10, 145,222.80 and 57,487.52

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Solution

The fourth proportional to 105,235.10, 145,222.80 and 57,487.52 is: 79,331.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,235.10 : 145,222.80 = 57,487.52 : x
  2. Step 2: Convert to fraction form
    105,235.10/145,222.80 = 57,487.52/x
  3. Step 3: Cross multiply
    105,235.10x = 145,222.80 × 57,487.52
  4. Step 4: Simplify right side
    105,235.10x = 8,348,498,619.46
  5. Step 5: Solve for x
    x = 8,348,498,619.46/105,235.10
  6. Step 6: Final answer
    x = 79,331.88

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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.