Home / 158,280.89-218,427.64-86,665.34

Finding the Fourth Proportional to 158,280.89, 218,427.64 and 86,665.34

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Solution

The fourth proportional to 158,280.89, 218,427.64 and 86,665.34 is: 119,598.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,280.89 : 218,427.64 = 86,665.34 : x
  2. Step 2: Convert to fraction form
    158,280.89/218,427.64 = 86,665.34/x
  3. Step 3: Cross multiply
    158,280.89x = 218,427.64 × 86,665.34
  4. Step 4: Simplify right side
    158,280.89x = 18,930,106,015.40
  5. Step 5: Solve for x
    x = 18,930,106,015.40/158,280.89
  6. Step 6: Final answer
    x = 119,598.18

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1.5x scale

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.