Home / 102,711.40-141,739.62-57,999.40

Finding the Fourth Proportional to 102,711.40, 141,739.62 and 57,999.40

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Solution

The fourth proportional to 102,711.40, 141,739.62 and 57,999.40 is: 80,037.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,711.40 : 141,739.62 = 57,999.40 : x
  2. Step 2: Convert to fraction form
    102,711.40/141,739.62 = 57,999.40/x
  3. Step 3: Cross multiply
    102,711.40x = 141,739.62 × 57,999.40
  4. Step 4: Simplify right side
    102,711.40x = 8,220,812,916.23
  5. Step 5: Solve for x
    x = 8,220,812,916.23/102,711.40
  6. Step 6: Final answer
    x = 80,037.98

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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.