Home / 128,244.12-176,979.78-71,655.36

Finding the Fourth Proportional to 128,244.12, 176,979.78 and 71,655.36

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Solution

The fourth proportional to 128,244.12, 176,979.78 and 71,655.36 is: 98,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,244.12 : 176,979.78 = 71,655.36 : x
  2. Step 2: Convert to fraction form
    128,244.12/176,979.78 = 71,655.36/x
  3. Step 3: Cross multiply
    128,244.12x = 176,979.78 × 71,655.36
  4. Step 4: Simplify right side
    128,244.12x = 12,681,549,848.62
  5. Step 5: Solve for x
    x = 12,681,549,848.62/128,244.12
  6. Step 6: Final answer
    x = 98,886.01

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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.