Home / 136,886.36-188,901.18-76,457.86

Finding the Fourth Proportional to 136,886.36, 188,901.18 and 76,457.86

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Solution

The fourth proportional to 136,886.36, 188,901.18 and 76,457.86 is: 105,510.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,886.36 : 188,901.18 = 76,457.86 : x
  2. Step 2: Convert to fraction form
    136,886.36/188,901.18 = 76,457.86/x
  3. Step 3: Cross multiply
    136,886.36x = 188,901.18 × 76,457.86
  4. Step 4: Simplify right side
    136,886.36x = 14,442,979,502.02
  5. Step 5: Solve for x
    x = 14,442,979,502.02/136,886.36
  6. Step 6: Final answer
    x = 105,510.73

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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.