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Finding the Fourth Proportional to 160,430.91, 221,406.95 and 91,521.89

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Solution

The fourth proportional to 160,430.91, 221,406.95 and 91,521.89 is: 126,307.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,430.91 : 221,406.95 = 91,521.89 : x
  2. Step 2: Convert to fraction form
    160,430.91/221,406.95 = 91,521.89/x
  3. Step 3: Cross multiply
    160,430.91x = 221,406.95 × 91,521.89
  4. Step 4: Simplify right side
    160,430.91x = 20,263,582,523.14
  5. Step 5: Solve for x
    x = 20,263,582,523.14/160,430.91
  6. Step 6: Final answer
    x = 126,307.22

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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.