Home / 99,389.32-137,208.08-76,677.33

Finding the Fourth Proportional to 99,389.32, 137,208.08 and 76,677.33

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Solution

The fourth proportional to 99,389.32, 137,208.08 and 76,677.33 is: 105,853.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,389.32 : 137,208.08 = 76,677.33 : x
  2. Step 2: Convert to fraction form
    99,389.32/137,208.08 = 76,677.33/x
  3. Step 3: Cross multiply
    99,389.32x = 137,208.08 × 76,677.33
  4. Step 4: Simplify right side
    99,389.32x = 10,520,749,228.83
  5. Step 5: Solve for x
    x = 10,520,749,228.83/99,389.32
  6. Step 6: Final answer
    x = 105,853.92

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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.