Home / 111,206.10-166,809.15-103,430.10

Finding the Fourth Proportional to 111,206.10, 166,809.15 and 103,430.10

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Solution

The fourth proportional to 111,206.10, 166,809.15 and 103,430.10 is: 155,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,206.10 : 166,809.15 = 103,430.10 : x
  2. Step 2: Convert to fraction form
    111,206.10/166,809.15 = 103,430.10/x
  3. Step 3: Cross multiply
    111,206.10x = 166,809.15 × 103,430.10
  4. Step 4: Simplify right side
    111,206.10x = 17,253,087,065.42
  5. Step 5: Solve for x
    x = 17,253,087,065.42/111,206.10
  6. Step 6: Final answer
    x = 155,145.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.