Home / 103,521.12-155,282.64-56,748.48

Finding the Fourth Proportional to 103,521.12, 155,282.64 and 56,748.48

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Solution

The fourth proportional to 103,521.12, 155,282.64 and 56,748.48 is: 85,123.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,521.12 : 155,282.64 = 56,748.48 : x
  2. Step 2: Convert to fraction form
    103,521.12/155,282.64 = 56,748.48/x
  3. Step 3: Cross multiply
    103,521.12x = 155,282.64 × 56,748.48
  4. Step 4: Simplify right side
    103,521.12x = 8,812,053,790.39
  5. Step 5: Solve for x
    x = 8,812,053,790.39/103,521.12
  6. Step 6: Final answer
    x = 85,123.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.