Home / 103,335.96-142,605.18-99,760.20

Finding the Fourth Proportional to 103,335.96, 142,605.18 and 99,760.20

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Solution

The fourth proportional to 103,335.96, 142,605.18 and 99,760.20 is: 137,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,335.96 : 142,605.18 = 99,760.20 : x
  2. Step 2: Convert to fraction form
    103,335.96/142,605.18 = 99,760.20/x
  3. Step 3: Cross multiply
    103,335.96x = 142,605.18 × 99,760.20
  4. Step 4: Simplify right side
    103,335.96x = 14,226,321,277.84
  5. Step 5: Solve for x
    x = 14,226,321,277.84/103,335.96
  6. Step 6: Final answer
    x = 137,670.58

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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.