Home / 109,104.17-163,628.91-77,421.83

Finding the Fourth Proportional to 109,104.17, 163,628.91 and 77,421.83

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Solution

The fourth proportional to 109,104.17, 163,628.91 and 77,421.83 is: 116,113.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,104.17 : 163,628.91 = 77,421.83 : x
  2. Step 2: Convert to fraction form
    109,104.17/163,628.91 = 77,421.83/x
  3. Step 3: Cross multiply
    109,104.17x = 163,628.91 × 77,421.83
  4. Step 4: Simplify right side
    109,104.17x = 12,668,448,834.96
  5. Step 5: Solve for x
    x = 12,668,448,834.96/109,104.17
  6. Step 6: Final answer
    x = 116,113.34

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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.