Home / 112,966.40-169,449.60-86,803.20

Finding the Fourth Proportional to 112,966.40, 169,449.60 and 86,803.20

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Solution

The fourth proportional to 112,966.40, 169,449.60 and 86,803.20 is: 130,204.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,966.40 : 169,449.60 = 86,803.20 : x
  2. Step 2: Convert to fraction form
    112,966.40/169,449.60 = 86,803.20/x
  3. Step 3: Cross multiply
    112,966.40x = 169,449.60 × 86,803.20
  4. Step 4: Simplify right side
    112,966.40x = 14,708,767,518.72
  5. Step 5: Solve for x
    x = 14,708,767,518.72/112,966.40
  6. Step 6: Final answer
    x = 130,204.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.