Home / 127,140.30-190,678.50-52,281.36

Finding the Fourth Proportional to 127,140.30, 190,678.50 and 52,281.36

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Solution

The fourth proportional to 127,140.30, 190,678.50 and 52,281.36 is: 78,408.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,140.30 : 190,678.50 = 52,281.36 : x
  2. Step 2: Convert to fraction form
    127,140.30/190,678.50 = 52,281.36/x
  3. Step 3: Cross multiply
    127,140.30x = 190,678.50 × 52,281.36
  4. Step 4: Simplify right side
    127,140.30x = 9,968,931,302.76
  5. Step 5: Solve for x
    x = 9,968,931,302.76/127,140.30
  6. Step 6: Final answer
    x = 78,408.90

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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.