Home / 187,107.40-280,661.10-112,457.80

Finding the Fourth Proportional to 187,107.40, 280,661.10 and 112,457.80

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Solution

The fourth proportional to 187,107.40, 280,661.10 and 112,457.80 is: 168,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,107.40 : 280,661.10 = 112,457.80 : x
  2. Step 2: Convert to fraction form
    187,107.40/280,661.10 = 112,457.80/x
  3. Step 3: Cross multiply
    187,107.40x = 280,661.10 × 112,457.80
  4. Step 4: Simplify right side
    187,107.40x = 31,562,529,851.58
  5. Step 5: Solve for x
    x = 31,562,529,851.58/187,107.40
  6. Step 6: Final answer
    x = 168,686.70

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1.5x scale

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.