Home / 158,748.12-219,078-87,130.08

Finding the Fourth Proportional to 158,748.12, 219,078 and 87,130.08

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Solution

The fourth proportional to 158,748.12, 219,078 and 87,130.08 is: 120,242.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,748.12 : 219,078 = 87,130.08 : x
  2. Step 2: Convert to fraction form
    158,748.12/219,078 = 87,130.08/x
  3. Step 3: Cross multiply
    158,748.12x = 219,078 × 87,130.08
  4. Step 4: Simplify right side
    158,748.12x = 19,088,283,666.24
  5. Step 5: Solve for x
    x = 19,088,283,666.24/158,748.12
  6. Step 6: Final answer
    x = 120,242.58

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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.