Home / 103,336.46-142,605.87-99,760.70

Finding the Fourth Proportional to 103,336.46, 142,605.87 and 99,760.70

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Solution

The fourth proportional to 103,336.46, 142,605.87 and 99,760.70 is: 137,671.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,336.46 : 142,605.87 = 99,760.70 : x
  2. Step 2: Convert to fraction form
    103,336.46/142,605.87 = 99,760.70/x
  3. Step 3: Cross multiply
    103,336.46x = 142,605.87 × 99,760.70
  4. Step 4: Simplify right side
    103,336.46x = 14,226,461,415.31
  5. Step 5: Solve for x
    x = 14,226,461,415.31/103,336.46
  6. Step 6: Final answer
    x = 137,671.27

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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.