Home / 138,158.64-190,641.78-87,152.04

Finding the Fourth Proportional to 138,158.64, 190,641.78 and 87,152.04

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Solution

The fourth proportional to 138,158.64, 190,641.78 and 87,152.04 is: 120,259.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,158.64 : 190,641.78 = 87,152.04 : x
  2. Step 2: Convert to fraction form
    138,158.64/190,641.78 = 87,152.04/x
  3. Step 3: Cross multiply
    138,158.64x = 190,641.78 × 87,152.04
  4. Step 4: Simplify right side
    138,158.64x = 16,614,820,036.23
  5. Step 5: Solve for x
    x = 16,614,820,036.23/138,158.64
  6. Step 6: Final answer
    x = 120,259.00

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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.