Home / 102,716.47-141,740.65-56,774.18

Finding the Fourth Proportional to 102,716.47, 141,740.65 and 56,774.18

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Solution

The fourth proportional to 102,716.47, 141,740.65 and 56,774.18 is: 78,343.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,716.47 : 141,740.65 = 56,774.18 : x
  2. Step 2: Convert to fraction form
    102,716.47/141,740.65 = 56,774.18/x
  3. Step 3: Cross multiply
    102,716.47x = 141,740.65 × 56,774.18
  4. Step 4: Simplify right side
    102,716.47x = 8,047,208,467.71
  5. Step 5: Solve for x
    x = 8,047,208,467.71/102,716.47
  6. Step 6: Final answer
    x = 78,343.90

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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.