Home / 158,157.02-218,259.42-86,543.30

Finding the Fourth Proportional to 158,157.02, 218,259.42 and 86,543.30

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Solution

The fourth proportional to 158,157.02, 218,259.42 and 86,543.30 is: 119,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,157.02 : 218,259.42 = 86,543.30 : x
  2. Step 2: Convert to fraction form
    158,157.02/218,259.42 = 86,543.30/x
  3. Step 3: Cross multiply
    158,157.02x = 218,259.42 × 86,543.30
  4. Step 4: Simplify right side
    158,157.02x = 18,888,890,462.89
  5. Step 5: Solve for x
    x = 18,888,890,462.89/158,157.02
  6. Step 6: Final answer
    x = 119,431.25

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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.