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Finding the Fourth Proportional to 109,065.40, 150,511.80 and 61,316.08

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Solution

The fourth proportional to 109,065.40, 150,511.80 and 61,316.08 is: 84,617.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,065.40 : 150,511.80 = 61,316.08 : x
  2. Step 2: Convert to fraction form
    109,065.40/150,511.80 = 61,316.08/x
  3. Step 3: Cross multiply
    109,065.40x = 150,511.80 × 61,316.08
  4. Step 4: Simplify right side
    109,065.40x = 9,228,793,569.74
  5. Step 5: Solve for x
    x = 9,228,793,569.74/109,065.40
  6. Step 6: Final answer
    x = 84,617.06

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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.