Home / 81,130.13-111,886.84-67,563.10

Finding the Fourth Proportional to 81,130.13, 111,886.84 and 67,563.10

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Solution

The fourth proportional to 81,130.13, 111,886.84 and 67,563.10 is: 93,176.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,130.13 : 111,886.84 = 67,563.10 : x
  2. Step 2: Convert to fraction form
    81,130.13/111,886.84 = 67,563.10/x
  3. Step 3: Cross multiply
    81,130.13x = 111,886.84 × 67,563.10
  4. Step 4: Simplify right side
    81,130.13x = 7,559,421,564.34
  5. Step 5: Solve for x
    x = 7,559,421,564.34/81,130.13
  6. Step 6: Final answer
    x = 93,176.51

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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.