Home / 257,078.03-385,612.92-70,089.53

Finding the Fourth Proportional to 257,078.03, 385,612.92 and 70,089.53

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Solution

The fourth proportional to 257,078.03, 385,612.92 and 70,089.53 is: 105,133.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,078.03 : 385,612.92 = 70,089.53 : x
  2. Step 2: Convert to fraction form
    257,078.03/385,612.92 = 70,089.53/x
  3. Step 3: Cross multiply
    257,078.03x = 385,612.92 × 70,089.53
  4. Step 4: Simplify right side
    257,078.03x = 27,027,429,288.76
  5. Step 5: Solve for x
    x = 27,027,429,288.76/257,078.03
  6. Step 6: Final answer
    x = 105,133.17

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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.