Home / 131,748.19-181,689.69-121,962.58

Finding the Fourth Proportional to 131,748.19, 181,689.69 and 121,962.58

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Solution

The fourth proportional to 131,748.19, 181,689.69 and 121,962.58 is: 168,194.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,748.19 : 181,689.69 = 121,962.58 : x
  2. Step 2: Convert to fraction form
    131,748.19/181,689.69 = 121,962.58/x
  3. Step 3: Cross multiply
    131,748.19x = 181,689.69 × 121,962.58
  4. Step 4: Simplify right side
    131,748.19x = 22,159,343,351.80
  5. Step 5: Solve for x
    x = 22,159,343,351.80/131,748.19
  6. Step 6: Final answer
    x = 168,194.67

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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.