Home / 158,318.22-218,484.09-86,705.04

Finding the Fourth Proportional to 158,318.22, 218,484.09 and 86,705.04

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Solution

The fourth proportional to 158,318.22, 218,484.09 and 86,705.04 is: 119,655.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,318.22 : 218,484.09 = 86,705.04 : x
  2. Step 2: Convert to fraction form
    158,318.22/218,484.09 = 86,705.04/x
  3. Step 3: Cross multiply
    158,318.22x = 218,484.09 × 86,705.04
  4. Step 4: Simplify right side
    158,318.22x = 18,943,671,762.81
  5. Step 5: Solve for x
    x = 18,943,671,762.81/158,318.22
  6. Step 6: Final answer
    x = 119,655.66

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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.