Home / 145,016,940.80-217,525,411.20-80,519,686.40

Finding the Fourth Proportional to 145,016,940.80, 217,525,411.20 and 80,519,686.40

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Solution

The fourth proportional to 145,016,940.80, 217,525,411.20 and 80,519,686.40 is: 120,779,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,016,940.80 : 217,525,411.20 = 80,519,686.40 : x
  2. Step 2: Convert to fraction form
    145,016,940.80/217,525,411.20 = 80,519,686.40/x
  3. Step 3: Cross multiply
    145,016,940.80x = 217,525,411.20 × 80,519,686.40
  4. Step 4: Simplify right side
    145,016,940.80x = 17,515,077,893,855,048
  5. Step 5: Solve for x
    x = 17,515,077,893,855,048/145,016,940.80
  6. Step 6: Final answer
    x = 120,779,529.60

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1.5x scale

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.