Home / 219,123.04-328,536.24-85,920.16

Finding the Fourth Proportional to 219,123.04, 328,536.24 and 85,920.16

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Solution

The fourth proportional to 219,123.04, 328,536.24 and 85,920.16 is: 128,822.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,123.04 : 328,536.24 = 85,920.16 : x
  2. Step 2: Convert to fraction form
    219,123.04/328,536.24 = 85,920.16/x
  3. Step 3: Cross multiply
    219,123.04x = 328,536.24 × 85,920.16
  4. Step 4: Simplify right side
    219,123.04x = 28,227,886,306.60
  5. Step 5: Solve for x
    x = 28,227,886,306.60/219,123.04
  6. Step 6: Final answer
    x = 128,822.08

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1.5x scale

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.