Home / 132,626,995.20-198,940,492.80-78,746,572.80

Finding the Fourth Proportional to 132,626,995.20, 198,940,492.80 and 78,746,572.80

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Solution

The fourth proportional to 132,626,995.20, 198,940,492.80 and 78,746,572.80 is: 118,119,859.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,626,995.20 : 198,940,492.80 = 78,746,572.80 : x
  2. Step 2: Convert to fraction form
    132,626,995.20/198,940,492.80 = 78,746,572.80/x
  3. Step 3: Cross multiply
    132,626,995.20x = 198,940,492.80 × 78,746,572.80
  4. Step 4: Simplify right side
    132,626,995.20x = 15,665,881,999,143,076
  5. Step 5: Solve for x
    x = 15,665,881,999,143,076/132,626,995.20
  6. Step 6: Final answer
    x = 118,119,859.20

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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.