Home / 131,124.21-180,980.07-83,368.23

Finding the Fourth Proportional to 131,124.21, 180,980.07 and 83,368.23

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Solution

The fourth proportional to 131,124.21, 180,980.07 and 83,368.23 is: 115,066.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,124.21 : 180,980.07 = 83,368.23 : x
  2. Step 2: Convert to fraction form
    131,124.21/180,980.07 = 83,368.23/x
  3. Step 3: Cross multiply
    131,124.21x = 180,980.07 × 83,368.23
  4. Step 4: Simplify right side
    131,124.21x = 15,087,987,684.34
  5. Step 5: Solve for x
    x = 15,087,987,684.34/131,124.21
  6. Step 6: Final answer
    x = 115,066.38

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Double scale
Find fourth proportional to 131,125.21, 180,981.45 and 83,369.23
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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.