Home / 99,428.24-137,211.21-54,106.20

Finding the Fourth Proportional to 99,428.24, 137,211.21 and 54,106.20

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Solution

The fourth proportional to 99,428.24, 137,211.21 and 54,106.20 is: 74,666.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,428.24 : 137,211.21 = 54,106.20 : x
  2. Step 2: Convert to fraction form
    99,428.24/137,211.21 = 54,106.20/x
  3. Step 3: Cross multiply
    99,428.24x = 137,211.21 × 54,106.20
  4. Step 4: Simplify right side
    99,428.24x = 7,423,977,170.50
  5. Step 5: Solve for x
    x = 7,423,977,170.50/99,428.24
  6. Step 6: Final answer
    x = 74,666.69

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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.