Home / 158,068.36-218,126.28-86,434.48

Finding the Fourth Proportional to 158,068.36, 218,126.28 and 86,434.48

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Solution

The fourth proportional to 158,068.36, 218,126.28 and 86,434.48 is: 119,275.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,068.36 : 218,126.28 = 86,434.48 : x
  2. Step 2: Convert to fraction form
    158,068.36/218,126.28 = 86,434.48/x
  3. Step 3: Cross multiply
    158,068.36x = 218,126.28 × 86,434.48
  4. Step 4: Simplify right side
    158,068.36x = 18,853,631,586.13
  5. Step 5: Solve for x
    x = 18,853,631,586.13/158,068.36
  6. Step 6: Final answer
    x = 119,275.18

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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.