Home / 130,938.48-180,700.32-74,355.12

Finding the Fourth Proportional to 130,938.48, 180,700.32 and 74,355.12

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Solution

The fourth proportional to 130,938.48, 180,700.32 and 74,355.12 is: 102,613.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,938.48 : 180,700.32 = 74,355.12 : x
  2. Step 2: Convert to fraction form
    130,938.48/180,700.32 = 74,355.12/x
  3. Step 3: Cross multiply
    130,938.48x = 180,700.32 × 74,355.12
  4. Step 4: Simplify right side
    130,938.48x = 13,435,993,977.64
  5. Step 5: Solve for x
    x = 13,435,993,977.64/130,938.48
  6. Step 6: Final answer
    x = 102,613.03

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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.