Home / 99,658.08-137,528.08-57,219.20

Finding the Fourth Proportional to 99,658.08, 137,528.08 and 57,219.20

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Solution

The fourth proportional to 99,658.08, 137,528.08 and 57,219.20 is: 78,962.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,658.08 : 137,528.08 = 57,219.20 : x
  2. Step 2: Convert to fraction form
    99,658.08/137,528.08 = 57,219.20/x
  3. Step 3: Cross multiply
    99,658.08x = 137,528.08 × 57,219.20
  4. Step 4: Simplify right side
    99,658.08x = 7,869,246,715.14
  5. Step 5: Solve for x
    x = 7,869,246,715.14/99,658.08
  6. Step 6: Final answer
    x = 78,962.46

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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.