Home / 106,438.95-146,830.77-66,137.40

Finding the Fourth Proportional to 106,438.95, 146,830.77 and 66,137.40

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Solution

The fourth proportional to 106,438.95, 146,830.77 and 66,137.40 is: 91,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,438.95 : 146,830.77 = 66,137.40 : x
  2. Step 2: Convert to fraction form
    106,438.95/146,830.77 = 66,137.40/x
  3. Step 3: Cross multiply
    106,438.95x = 146,830.77 × 66,137.40
  4. Step 4: Simplify right side
    106,438.95x = 9,711,005,367.80
  5. Step 5: Solve for x
    x = 9,711,005,367.80/106,438.95
  6. Step 6: Final answer
    x = 91,235.45

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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.