Home / 158,070.20-218,156.81-103,668.12

Finding the Fourth Proportional to 158,070.20, 218,156.81 and 103,668.12

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Solution

The fourth proportional to 158,070.20, 218,156.81 and 103,668.12 is: 143,075.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,070.20 : 218,156.81 = 103,668.12 : x
  2. Step 2: Convert to fraction form
    158,070.20/218,156.81 = 103,668.12/x
  3. Step 3: Cross multiply
    158,070.20x = 218,156.81 × 103,668.12
  4. Step 4: Simplify right side
    158,070.20x = 22,615,905,839.56
  5. Step 5: Solve for x
    x = 22,615,905,839.56/158,070.20
  6. Step 6: Final answer
    x = 143,075.08

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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.