Home / 102,411.92-141,328.12-57,089.40

Finding the Fourth Proportional to 102,411.92, 141,328.12 and 57,089.40

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Solution

The fourth proportional to 102,411.92, 141,328.12 and 57,089.40 is: 78,783.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,411.92 : 141,328.12 = 57,089.40 : x
  2. Step 2: Convert to fraction form
    102,411.92/141,328.12 = 57,089.40/x
  3. Step 3: Cross multiply
    102,411.92x = 141,328.12 × 57,089.40
  4. Step 4: Simplify right side
    102,411.92x = 8,068,337,573.93
  5. Step 5: Solve for x
    x = 8,068,337,573.93/102,411.92
  6. Step 6: Final answer
    x = 78,783.19

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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.