Home / 102,039.12-140,802.98-56,719.04

Finding the Fourth Proportional to 102,039.12, 140,802.98 and 56,719.04

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Solution

The fourth proportional to 102,039.12, 140,802.98 and 56,719.04 is: 78,266.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,039.12 : 140,802.98 = 56,719.04 : x
  2. Step 2: Convert to fraction form
    102,039.12/140,802.98 = 56,719.04/x
  3. Step 3: Cross multiply
    102,039.12x = 140,802.98 × 56,719.04
  4. Step 4: Simplify right side
    102,039.12x = 7,986,208,867.13
  5. Step 5: Solve for x
    x = 7,986,208,867.13/102,039.12
  6. Step 6: Final answer
    x = 78,266.15

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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.