Home / 99,386.57-137,204.28-76,674.58

Finding the Fourth Proportional to 99,386.57, 137,204.28 and 76,674.58

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Solution

The fourth proportional to 99,386.57, 137,204.28 and 76,674.58 is: 105,850.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,386.57 : 137,204.28 = 76,674.58 : x
  2. Step 2: Convert to fraction form
    99,386.57/137,204.28 = 76,674.58/x
  3. Step 3: Cross multiply
    99,386.57x = 137,204.28 × 76,674.58
  4. Step 4: Simplify right side
    99,386.57x = 10,520,080,200.19
  5. Step 5: Solve for x
    x = 10,520,080,200.19/99,386.57
  6. Step 6: Final answer
    x = 105,850.12

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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.