Home / 160,302.72-221,224.32-99,909.12

Finding the Fourth Proportional to 160,302.72, 221,224.32 and 99,909.12

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Solution

The fourth proportional to 160,302.72, 221,224.32 and 99,909.12 is: 137,878.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,302.72 : 221,224.32 = 99,909.12 : x
  2. Step 2: Convert to fraction form
    160,302.72/221,224.32 = 99,909.12/x
  3. Step 3: Cross multiply
    160,302.72x = 221,224.32 × 99,909.12
  4. Step 4: Simplify right side
    160,302.72x = 22,102,327,133.80
  5. Step 5: Solve for x
    x = 22,102,327,133.80/160,302.72
  6. Step 6: Final answer
    x = 137,878.68

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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.