Home / 208,026,646.80-312,039,970.20-105,989,974.80

Finding the Fourth Proportional to 208,026,646.80, 312,039,970.20 and 105,989,974.80

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Solution

The fourth proportional to 208,026,646.80, 312,039,970.20 and 105,989,974.80 is: 158,984,962.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,026,646.80 : 312,039,970.20 = 105,989,974.80 : x
  2. Step 2: Convert to fraction form
    208,026,646.80/312,039,970.20 = 105,989,974.80/x
  3. Step 3: Cross multiply
    208,026,646.80x = 312,039,970.20 × 105,989,974.80
  4. Step 4: Simplify right side
    208,026,646.80x = 33,073,108,578,090,748
  5. Step 5: Solve for x
    x = 33,073,108,578,090,748/208,026,646.80
  6. Step 6: Final answer
    x = 158,984,962.20

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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.