Home / 102,923.10-154,384.65-71,430.30

Finding the Fourth Proportional to 102,923.10, 154,384.65 and 71,430.30

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Solution

The fourth proportional to 102,923.10, 154,384.65 and 71,430.30 is: 107,145.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,923.10 : 154,384.65 = 71,430.30 : x
  2. Step 2: Convert to fraction form
    102,923.10/154,384.65 = 71,430.30/x
  3. Step 3: Cross multiply
    102,923.10x = 154,384.65 × 71,430.30
  4. Step 4: Simplify right side
    102,923.10x = 11,027,741,864.90
  5. Step 5: Solve for x
    x = 11,027,741,864.90/102,923.10
  6. Step 6: Final answer
    x = 107,145.45

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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.