Home / 118,138.24-163,030.82-64,421.88

Finding the Fourth Proportional to 118,138.24, 163,030.82 and 64,421.88

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Solution

The fourth proportional to 118,138.24, 163,030.82 and 64,421.88 is: 88,902.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,138.24 : 163,030.82 = 64,421.88 : x
  2. Step 2: Convert to fraction form
    118,138.24/163,030.82 = 64,421.88/x
  3. Step 3: Cross multiply
    118,138.24x = 163,030.82 × 64,421.88
  4. Step 4: Simplify right side
    118,138.24x = 10,502,750,988.87
  5. Step 5: Solve for x
    x = 10,502,750,988.87/118,138.24
  6. Step 6: Final answer
    x = 88,902.21

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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.