Home / 112,281.08-154,946.94-61,979

Finding the Fourth Proportional to 112,281.08, 154,946.94 and 61,979

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Solution

The fourth proportional to 112,281.08, 154,946.94 and 61,979 is: 85,530.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,281.08 : 154,946.94 = 61,979 : x
  2. Step 2: Convert to fraction form
    112,281.08/154,946.94 = 61,979/x
  3. Step 3: Cross multiply
    112,281.08x = 154,946.94 × 61,979
  4. Step 4: Simplify right side
    112,281.08x = 9,603,456,394.26
  5. Step 5: Solve for x
    x = 9,603,456,394.26/112,281.08
  6. Step 6: Final answer
    x = 85,530.50

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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.