Home / 103,109.40-154,663.98-28,230.12

Finding the Fourth Proportional to 103,109.40, 154,663.98 and 28,230.12

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Solution

The fourth proportional to 103,109.40, 154,663.98 and 28,230.12 is: 42,345.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,109.40 : 154,663.98 = 28,230.12 : x
  2. Step 2: Convert to fraction form
    103,109.40/154,663.98 = 28,230.12/x
  3. Step 3: Cross multiply
    103,109.40x = 154,663.98 × 28,230.12
  4. Step 4: Simplify right side
    103,109.40x = 4,366,182,715.08
  5. Step 5: Solve for x
    x = 4,366,182,715.08/103,109.40
  6. Step 6: Final answer
    x = 42,345.15

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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.