Home / 132,638.19-182,635.34-99,980.05

Finding the Fourth Proportional to 132,638.19, 182,635.34 and 99,980.05

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Solution

The fourth proportional to 132,638.19, 182,635.34 and 99,980.05 is: 137,666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,638.19 : 182,635.34 = 99,980.05 : x
  2. Step 2: Convert to fraction form
    132,638.19/182,635.34 = 99,980.05/x
  3. Step 3: Cross multiply
    132,638.19x = 182,635.34 × 99,980.05
  4. Step 4: Simplify right side
    132,638.19x = 18,259,889,925.07
  5. Step 5: Solve for x
    x = 18,259,889,925.07/132,638.19
  6. Step 6: Final answer
    x = 137,666.92

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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.