Home / 137,240.24-189,390.30-76,810.20

Finding the Fourth Proportional to 137,240.24, 189,390.30 and 76,810.20

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Solution

The fourth proportional to 137,240.24, 189,390.30 and 76,810.20 is: 105,997.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,240.24 : 189,390.30 = 76,810.20 : x
  2. Step 2: Convert to fraction form
    137,240.24/189,390.30 = 76,810.20/x
  3. Step 3: Cross multiply
    137,240.24x = 189,390.30 × 76,810.20
  4. Step 4: Simplify right side
    137,240.24x = 14,547,106,821.06
  5. Step 5: Solve for x
    x = 14,547,106,821.06/137,240.24
  6. Step 6: Final answer
    x = 105,997.39

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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.