Home / 105,330.26-145,431.87-65,099.18

Finding the Fourth Proportional to 105,330.26, 145,431.87 and 65,099.18

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Solution

The fourth proportional to 105,330.26, 145,431.87 and 65,099.18 is: 89,883.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,330.26 : 145,431.87 = 65,099.18 : x
  2. Step 2: Convert to fraction form
    105,330.26/145,431.87 = 65,099.18/x
  3. Step 3: Cross multiply
    105,330.26x = 145,431.87 × 65,099.18
  4. Step 4: Simplify right side
    105,330.26x = 9,467,495,482.87
  5. Step 5: Solve for x
    x = 9,467,495,482.87/105,330.26
  6. Step 6: Final answer
    x = 89,883.91

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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.