Home / 150,015.12-207,040.32-85,507.53

Finding the Fourth Proportional to 150,015.12, 207,040.32 and 85,507.53

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Solution

The fourth proportional to 150,015.12, 207,040.32 and 85,507.53 is: 118,011.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,015.12 : 207,040.32 = 85,507.53 : x
  2. Step 2: Convert to fraction form
    150,015.12/207,040.32 = 85,507.53/x
  3. Step 3: Cross multiply
    150,015.12x = 207,040.32 × 85,507.53
  4. Step 4: Simplify right side
    150,015.12x = 17,703,506,373.61
  5. Step 5: Solve for x
    x = 17,703,506,373.61/150,015.12
  6. Step 6: Final answer
    x = 118,011.48

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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.