Home / 115,147.07-172,510.10-83,478.70

Finding the Fourth Proportional to 115,147.07, 172,510.10 and 83,478.70

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Solution

The fourth proportional to 115,147.07, 172,510.10 and 83,478.70 is: 125,065.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,147.07 : 172,510.10 = 83,478.70 : x
  2. Step 2: Convert to fraction form
    115,147.07/172,510.10 = 83,478.70/x
  3. Step 3: Cross multiply
    115,147.07x = 172,510.10 × 83,478.70
  4. Step 4: Simplify right side
    115,147.07x = 14,400,919,465.73
  5. Step 5: Solve for x
    x = 14,400,919,465.73/115,147.07
  6. Step 6: Final answer
    x = 125,065.45

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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.