Home / 89,964.30-134,946.45-86,124.90

Finding the Fourth Proportional to 89,964.30, 134,946.45 and 86,124.90

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Solution

The fourth proportional to 89,964.30, 134,946.45 and 86,124.90 is: 129,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,964.30 : 134,946.45 = 86,124.90 : x
  2. Step 2: Convert to fraction form
    89,964.30/134,946.45 = 86,124.90/x
  3. Step 3: Cross multiply
    89,964.30x = 134,946.45 × 86,124.90
  4. Step 4: Simplify right side
    89,964.30x = 11,622,249,511.61
  5. Step 5: Solve for x
    x = 11,622,249,511.61/89,964.30
  6. Step 6: Final answer
    x = 129,187.35

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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.