Home / 102,890.50-154,345-28,011.04

Finding the Fourth Proportional to 102,890.50, 154,345 and 28,011.04

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Solution

The fourth proportional to 102,890.50, 154,345 and 28,011.04 is: 42,019.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,890.50 : 154,345 = 28,011.04 : x
  2. Step 2: Convert to fraction form
    102,890.50/154,345 = 28,011.04/x
  3. Step 3: Cross multiply
    102,890.50x = 154,345 × 28,011.04
  4. Step 4: Simplify right side
    102,890.50x = 4,323,363,968.80
  5. Step 5: Solve for x
    x = 4,323,363,968.80/102,890.50
  6. Step 6: Final answer
    x = 42,019.08

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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.