Home / 128,051.10-176,713.34-70,690.28

Finding the Fourth Proportional to 128,051.10, 176,713.34 and 70,690.28

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Solution

The fourth proportional to 128,051.10, 176,713.34 and 70,690.28 is: 97,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,051.10 : 176,713.34 = 70,690.28 : x
  2. Step 2: Convert to fraction form
    128,051.10/176,713.34 = 70,690.28/x
  3. Step 3: Cross multiply
    128,051.10x = 176,713.34 × 70,690.28
  4. Step 4: Simplify right side
    128,051.10x = 12,491,914,247.32
  5. Step 5: Solve for x
    x = 12,491,914,247.32/128,051.10
  6. Step 6: Final answer
    x = 97,554.13

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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.