Home / 99,342.13-137,142.93-76,630.13

Finding the Fourth Proportional to 99,342.13, 137,142.93 and 76,630.13

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Solution

The fourth proportional to 99,342.13, 137,142.93 and 76,630.13 is: 105,788.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,342.13 : 137,142.93 = 76,630.13 : x
  2. Step 2: Convert to fraction form
    99,342.13/137,142.93 = 76,630.13/x
  3. Step 3: Cross multiply
    99,342.13x = 137,142.93 × 76,630.13
  4. Step 4: Simplify right side
    99,342.13x = 10,509,280,554.48
  5. Step 5: Solve for x
    x = 10,509,280,554.48/99,342.13
  6. Step 6: Final answer
    x = 105,788.76

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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.