Home / 108,490,887.20-149,574,959.12-78,290,040.96

Finding the Fourth Proportional to 108,490,887.20, 149,574,959.12 and 78,290,040.96

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Solution

The fourth proportional to 108,490,887.20, 149,574,959.12 and 78,290,040.96 is: 107,937,449.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,490,887.20 : 149,574,959.12 = 78,290,040.96 : x
  2. Step 2: Convert to fraction form
    108,490,887.20/149,574,959.12 = 78,290,040.96/x
  3. Step 3: Cross multiply
    108,490,887.20x = 149,574,959.12 × 78,290,040.96
  4. Step 4: Simplify right side
    108,490,887.20x = 11,710,229,676,095,124
  5. Step 5: Solve for x
    x = 11,710,229,676,095,124/108,490,887.20
  6. Step 6: Final answer
    x = 107,937,449.66

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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.