Home / 140,430,940.80-210,646,411.20-86,011,382.40

Finding the Fourth Proportional to 140,430,940.80, 210,646,411.20 and 86,011,382.40

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Solution

The fourth proportional to 140,430,940.80, 210,646,411.20 and 86,011,382.40 is: 129,017,073.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,430,940.80 : 210,646,411.20 = 86,011,382.40 : x
  2. Step 2: Convert to fraction form
    140,430,940.80/210,646,411.20 = 86,011,382.40/x
  3. Step 3: Cross multiply
    140,430,940.80x = 210,646,411.20 × 86,011,382.40
  4. Step 4: Simplify right side
    140,430,940.80x = 18,117,989,024,910,844
  5. Step 5: Solve for x
    x = 18,117,989,024,910,844/140,430,940.80
  6. Step 6: Final answer
    x = 129,017,073.60

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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.