Home / 115,485.40-173,192.10-45,386.20

Finding the Fourth Proportional to 115,485.40, 173,192.10 and 45,386.20

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Solution

The fourth proportional to 115,485.40, 173,192.10 and 45,386.20 is: 68,065.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,485.40 : 173,192.10 = 45,386.20 : x
  2. Step 2: Convert to fraction form
    115,485.40/173,192.10 = 45,386.20/x
  3. Step 3: Cross multiply
    115,485.40x = 173,192.10 × 45,386.20
  4. Step 4: Simplify right side
    115,485.40x = 7,860,531,289.02
  5. Step 5: Solve for x
    x = 7,860,531,289.02/115,485.40
  6. Step 6: Final answer
    x = 68,065.15

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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.