Home / 127,408.12-191,038.35-43,140.16

Finding the Fourth Proportional to 127,408.12, 191,038.35 and 43,140.16

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Solution

The fourth proportional to 127,408.12, 191,038.35 and 43,140.16 is: 64,685.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,408.12 : 191,038.35 = 43,140.16 : x
  2. Step 2: Convert to fraction form
    127,408.12/191,038.35 = 43,140.16/x
  3. Step 3: Cross multiply
    127,408.12x = 191,038.35 × 43,140.16
  4. Step 4: Simplify right side
    127,408.12x = 8,241,424,985.14
  5. Step 5: Solve for x
    x = 8,241,424,985.14/127,408.12
  6. Step 6: Final answer
    x = 64,685.24

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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.