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Finding the Fourth Proportional to 101,294.60, 139,786.42 and 56,582.60

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Solution

The fourth proportional to 101,294.60, 139,786.42 and 56,582.60 is: 78,083.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,294.60 : 139,786.42 = 56,582.60 : x
  2. Step 2: Convert to fraction form
    101,294.60/139,786.42 = 56,582.60/x
  3. Step 3: Cross multiply
    101,294.60x = 139,786.42 × 56,582.60
  4. Step 4: Simplify right side
    101,294.60x = 7,909,479,088.29
  5. Step 5: Solve for x
    x = 7,909,479,088.29/101,294.60
  6. Step 6: Final answer
    x = 78,083.92

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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.