Home / 137,908.16-190,253.28-86,889.92

Finding the Fourth Proportional to 137,908.16, 190,253.28 and 86,889.92

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Solution

The fourth proportional to 137,908.16, 190,253.28 and 86,889.92 is: 119,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,908.16 : 190,253.28 = 86,889.92 : x
  2. Step 2: Convert to fraction form
    137,908.16/190,253.28 = 86,889.92/x
  3. Step 3: Cross multiply
    137,908.16x = 190,253.28 × 86,889.92
  4. Step 4: Simplify right side
    137,908.16x = 16,531,092,278.94
  5. Step 5: Solve for x
    x = 16,531,092,278.94/137,908.16
  6. Step 6: Final answer
    x = 119,870.30

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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.