Home / 208,008,111.60-312,049,492.20-86,851,810.80

Finding the Fourth Proportional to 208,008,111.60, 312,049,492.20 and 86,851,810.80

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Solution

The fourth proportional to 208,008,111.60, 312,049,492.20 and 86,851,810.80 is: 130,293,300.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,008,111.60 : 312,049,492.20 = 86,851,810.80 : x
  2. Step 2: Convert to fraction form
    208,008,111.60/312,049,492.20 = 86,851,810.80/x
  3. Step 3: Cross multiply
    208,008,111.60x = 312,049,492.20 × 86,851,810.80
  4. Step 4: Simplify right side
    208,008,111.60x = 27,102,063,456,790,472
  5. Step 5: Solve for x
    x = 27,102,063,456,790,472/208,008,111.60
  6. Step 6: Final answer
    x = 130,293,300.82

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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.