Home / 147,904.90-221,706.15-72,909.70

Finding the Fourth Proportional to 147,904.90, 221,706.15 and 72,909.70

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Solution

The fourth proportional to 147,904.90, 221,706.15 and 72,909.70 is: 109,290.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,904.90 : 221,706.15 = 72,909.70 : x
  2. Step 2: Convert to fraction form
    147,904.90/221,706.15 = 72,909.70/x
  3. Step 3: Cross multiply
    147,904.90x = 221,706.15 × 72,909.70
  4. Step 4: Simplify right side
    147,904.90x = 16,164,528,884.66
  5. Step 5: Solve for x
    x = 16,164,528,884.66/147,904.90
  6. Step 6: Final answer
    x = 109,290.02

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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.