Home / 158,316.23-218,478.93-86,695

Finding the Fourth Proportional to 158,316.23, 218,478.93 and 86,695

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Solution

The fourth proportional to 158,316.23, 218,478.93 and 86,695 is: 119,640.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,316.23 : 218,478.93 = 86,695 : x
  2. Step 2: Convert to fraction form
    158,316.23/218,478.93 = 86,695/x
  3. Step 3: Cross multiply
    158,316.23x = 218,478.93 × 86,695
  4. Step 4: Simplify right side
    158,316.23x = 18,941,030,836.35
  5. Step 5: Solve for x
    x = 18,941,030,836.35/158,316.23
  6. Step 6: Final answer
    x = 119,640.49

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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.