Home / 99,120.12-136,785.90-53,798.10

Finding the Fourth Proportional to 99,120.12, 136,785.90 and 53,798.10

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Solution

The fourth proportional to 99,120.12, 136,785.90 and 53,798.10 is: 74,241.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,120.12 : 136,785.90 = 53,798.10 : x
  2. Step 2: Convert to fraction form
    99,120.12/136,785.90 = 53,798.10/x
  3. Step 3: Cross multiply
    99,120.12x = 136,785.90 × 53,798.10
  4. Step 4: Simplify right side
    99,120.12x = 7,358,821,526.79
  5. Step 5: Solve for x
    x = 7,358,821,526.79/99,120.12
  6. Step 6: Final answer
    x = 74,241.45

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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.