Home / 113,314.68-156,409.92-77,491.08

Finding the Fourth Proportional to 113,314.68, 156,409.92 and 77,491.08

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Solution

The fourth proportional to 113,314.68, 156,409.92 and 77,491.08 is: 106,962.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,314.68 : 156,409.92 = 77,491.08 : x
  2. Step 2: Convert to fraction form
    113,314.68/156,409.92 = 77,491.08/x
  3. Step 3: Cross multiply
    113,314.68x = 156,409.92 × 77,491.08
  4. Step 4: Simplify right side
    113,314.68x = 12,120,373,623.51
  5. Step 5: Solve for x
    x = 12,120,373,623.51/113,314.68
  6. Step 6: Final answer
    x = 106,962.08

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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.