Home / 115,777.59-173,386.10-80,139.06

Finding the Fourth Proportional to 115,777.59, 173,386.10 and 80,139.06

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Solution

The fourth proportional to 115,777.59, 173,386.10 and 80,139.06 is: 120,014.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,777.59 : 173,386.10 = 80,139.06 : x
  2. Step 2: Convert to fraction form
    115,777.59/173,386.10 = 80,139.06/x
  3. Step 3: Cross multiply
    115,777.59x = 173,386.10 × 80,139.06
  4. Step 4: Simplify right side
    115,777.59x = 13,894,999,071.07
  5. Step 5: Solve for x
    x = 13,894,999,071.07/115,777.59
  6. Step 6: Final answer
    x = 120,014.58

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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.