Home / 134,880.10-186,120.12-77,507.80

Finding the Fourth Proportional to 134,880.10, 186,120.12 and 77,507.80

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Solution

The fourth proportional to 134,880.10, 186,120.12 and 77,507.80 is: 106,952.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,880.10 : 186,120.12 = 77,507.80 : x
  2. Step 2: Convert to fraction form
    134,880.10/186,120.12 = 77,507.80/x
  3. Step 3: Cross multiply
    134,880.10x = 186,120.12 × 77,507.80
  4. Step 4: Simplify right side
    134,880.10x = 14,425,761,036.94
  5. Step 5: Solve for x
    x = 14,425,761,036.94/134,880.10
  6. Step 6: Final answer
    x = 106,952.48

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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.