Home / 113,427.40-156,549.78-86,528.20

Finding the Fourth Proportional to 113,427.40, 156,549.78 and 86,528.20

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Solution

The fourth proportional to 113,427.40, 156,549.78 and 86,528.20 is: 119,424.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,427.40 : 156,549.78 = 86,528.20 : x
  2. Step 2: Convert to fraction form
    113,427.40/156,549.78 = 86,528.20/x
  3. Step 3: Cross multiply
    113,427.40x = 156,549.78 × 86,528.20
  4. Step 4: Simplify right side
    113,427.40x = 13,545,970,673.80
  5. Step 5: Solve for x
    x = 13,545,970,673.80/113,427.40
  6. Step 6: Final answer
    x = 119,424.15

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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.