Home / 117,509.76-162,053.33-90,609.66

Finding the Fourth Proportional to 117,509.76, 162,053.33 and 90,609.66

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Solution

The fourth proportional to 117,509.76, 162,053.33 and 90,609.66 is: 124,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,509.76 : 162,053.33 = 90,609.66 : x
  2. Step 2: Convert to fraction form
    117,509.76/162,053.33 = 90,609.66/x
  3. Step 3: Cross multiply
    117,509.76x = 162,053.33 × 90,609.66
  4. Step 4: Simplify right side
    117,509.76x = 14,683,596,680.12
  5. Step 5: Solve for x
    x = 14,683,596,680.12/117,509.76
  6. Step 6: Final answer
    x = 124,956.40

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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.