Home / 138,582.90-191,244.24-74,920.68

Finding the Fourth Proportional to 138,582.90, 191,244.24 and 74,920.68

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Solution

The fourth proportional to 138,582.90, 191,244.24 and 74,920.68 is: 103,390.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,582.90 : 191,244.24 = 74,920.68 : x
  2. Step 2: Convert to fraction form
    138,582.90/191,244.24 = 74,920.68/x
  3. Step 3: Cross multiply
    138,582.90x = 191,244.24 × 74,920.68
  4. Step 4: Simplify right side
    138,582.90x = 14,328,148,506.88
  5. Step 5: Solve for x
    x = 14,328,148,506.88/138,582.90
  6. Step 6: Final answer
    x = 103,390.45

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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.