Home / 102,420.48-141,339.84-57,097.92

Finding the Fourth Proportional to 102,420.48, 141,339.84 and 57,097.92

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Solution

The fourth proportional to 102,420.48, 141,339.84 and 57,097.92 is: 78,794.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,420.48 : 141,339.84 = 57,097.92 : x
  2. Step 2: Convert to fraction form
    102,420.48/141,339.84 = 57,097.92/x
  3. Step 3: Cross multiply
    102,420.48x = 141,339.84 × 57,097.92
  4. Step 4: Simplify right side
    102,420.48x = 8,070,210,877.13
  5. Step 5: Solve for x
    x = 8,070,210,877.13/102,420.48
  6. Step 6: Final answer
    x = 78,794.89

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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.