Home / 105,432.12-145,500.66-57,689.64

Finding the Fourth Proportional to 105,432.12, 145,500.66 and 57,689.64

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Solution

The fourth proportional to 105,432.12, 145,500.66 and 57,689.64 is: 79,614.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,432.12 : 145,500.66 = 57,689.64 : x
  2. Step 2: Convert to fraction form
    105,432.12/145,500.66 = 57,689.64/x
  3. Step 3: Cross multiply
    105,432.12x = 145,500.66 × 57,689.64
  4. Step 4: Simplify right side
    105,432.12x = 8,393,880,695.16
  5. Step 5: Solve for x
    x = 8,393,880,695.16/105,432.12
  6. Step 6: Final answer
    x = 79,614.07

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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.