Home / 140,215.30-210,541.65-81,166.30

Finding the Fourth Proportional to 140,215.30, 210,541.65 and 81,166.30

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Solution

The fourth proportional to 140,215.30, 210,541.65 and 81,166.30 is: 121,876.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,215.30 : 210,541.65 = 81,166.30 : x
  2. Step 2: Convert to fraction form
    140,215.30/210,541.65 = 81,166.30/x
  3. Step 3: Cross multiply
    140,215.30x = 210,541.65 × 81,166.30
  4. Step 4: Simplify right side
    140,215.30x = 17,088,886,726.40
  5. Step 5: Solve for x
    x = 17,088,886,726.40/140,215.30
  6. Step 6: Final answer
    x = 121,876.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.