Home / 129,237.82-178,314.48-75,492.29

Finding the Fourth Proportional to 129,237.82, 178,314.48 and 75,492.29

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Solution

The fourth proportional to 129,237.82, 178,314.48 and 75,492.29 is: 104,159.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,237.82 : 178,314.48 = 75,492.29 : x
  2. Step 2: Convert to fraction form
    129,237.82/178,314.48 = 75,492.29/x
  3. Step 3: Cross multiply
    129,237.82x = 178,314.48 × 75,492.29
  4. Step 4: Simplify right side
    129,237.82x = 13,461,368,881.15
  5. Step 5: Solve for x
    x = 13,461,368,881.15/129,237.82
  6. Step 6: Final answer
    x = 104,159.67

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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.