Home / 113,102.40-156,070.56-65,349.36

Finding the Fourth Proportional to 113,102.40, 156,070.56 and 65,349.36

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Solution

The fourth proportional to 113,102.40, 156,070.56 and 65,349.36 is: 90,175.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,102.40 : 156,070.56 = 65,349.36 : x
  2. Step 2: Convert to fraction form
    113,102.40/156,070.56 = 65,349.36/x
  3. Step 3: Cross multiply
    113,102.40x = 156,070.56 × 65,349.36
  4. Step 4: Simplify right side
    113,102.40x = 10,199,111,210.84
  5. Step 5: Solve for x
    x = 10,199,111,210.84/113,102.40
  6. Step 6: Final answer
    x = 90,175.90

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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.