Home / 158,621.48-218,900.64-87,005.13

Finding the Fourth Proportional to 158,621.48, 218,900.64 and 87,005.13

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Solution

The fourth proportional to 158,621.48, 218,900.64 and 87,005.13 is: 120,068.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,621.48 : 218,900.64 = 87,005.13 : x
  2. Step 2: Convert to fraction form
    158,621.48/218,900.64 = 87,005.13/x
  3. Step 3: Cross multiply
    158,621.48x = 218,900.64 × 87,005.13
  4. Step 4: Simplify right side
    158,621.48x = 19,045,478,640.28
  5. Step 5: Solve for x
    x = 19,045,478,640.28/158,621.48
  6. Step 6: Final answer
    x = 120,068.72

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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.