Home / 159,431.04-220,014.72-87,809.28

Finding the Fourth Proportional to 159,431.04, 220,014.72 and 87,809.28

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Solution

The fourth proportional to 159,431.04, 220,014.72 and 87,809.28 is: 121,176.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,431.04 : 220,014.72 = 87,809.28 : x
  2. Step 2: Convert to fraction form
    159,431.04/220,014.72 = 87,809.28/x
  3. Step 3: Cross multiply
    159,431.04x = 220,014.72 × 87,809.28
  4. Step 4: Simplify right side
    159,431.04x = 19,319,334,152.60
  5. Step 5: Solve for x
    x = 19,319,334,152.60/159,431.04
  6. Step 6: Final answer
    x = 121,176.74

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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.