Home / 118,789.28-163,889-70,376.08

Finding the Fourth Proportional to 118,789.28, 163,889 and 70,376.08

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Solution

The fourth proportional to 118,789.28, 163,889 and 70,376.08 is: 97,095.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,789.28 : 163,889 = 70,376.08 : x
  2. Step 2: Convert to fraction form
    118,789.28/163,889 = 70,376.08/x
  3. Step 3: Cross multiply
    118,789.28x = 163,889 × 70,376.08
  4. Step 4: Simplify right side
    118,789.28x = 11,533,865,375.12
  5. Step 5: Solve for x
    x = 11,533,865,375.12/118,789.28
  6. Step 6: Final answer
    x = 97,095.17

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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.