Home / 131,620,111.80-197,430,167.70-77,739,689.40

Finding the Fourth Proportional to 131,620,111.80, 197,430,167.70 and 77,739,689.40

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Solution

The fourth proportional to 131,620,111.80, 197,430,167.70 and 77,739,689.40 is: 116,609,534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,620,111.80 : 197,430,167.70 = 77,739,689.40 : x
  2. Step 2: Convert to fraction form
    131,620,111.80/197,430,167.70 = 77,739,689.40/x
  3. Step 3: Cross multiply
    131,620,111.80x = 197,430,167.70 × 77,739,689.40
  4. Step 4: Simplify right side
    131,620,111.80x = 15,348,159,915,187,912
  5. Step 5: Solve for x
    x = 15,348,159,915,187,912/131,620,111.80
  6. Step 6: Final answer
    x = 116,609,534.10

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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.