Home / 137,077.29-189,153.77-76,639.55

Finding the Fourth Proportional to 137,077.29, 189,153.77 and 76,639.55

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Solution

The fourth proportional to 137,077.29, 189,153.77 and 76,639.55 is: 105,755.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,077.29 : 189,153.77 = 76,639.55 : x
  2. Step 2: Convert to fraction form
    137,077.29/189,153.77 = 76,639.55/x
  3. Step 3: Cross multiply
    137,077.29x = 189,153.77 × 76,639.55
  4. Step 4: Simplify right side
    137,077.29x = 14,496,658,484.64
  5. Step 5: Solve for x
    x = 14,496,658,484.64/137,077.29
  6. Step 6: Final answer
    x = 105,755.36

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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.