Home / 145,006,284.80-217,509,427.20-80,509,030.40

Finding the Fourth Proportional to 145,006,284.80, 217,509,427.20 and 80,509,030.40

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Solution

The fourth proportional to 145,006,284.80, 217,509,427.20 and 80,509,030.40 is: 120,763,545.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,006,284.80 : 217,509,427.20 = 80,509,030.40 : x
  2. Step 2: Convert to fraction form
    145,006,284.80/217,509,427.20 = 80,509,030.40/x
  3. Step 3: Cross multiply
    145,006,284.80x = 217,509,427.20 × 80,509,030.40
  4. Step 4: Simplify right side
    145,006,284.80x = 17,511,473,086,731,388
  5. Step 5: Solve for x
    x = 17,511,473,086,731,388/145,006,284.80
  6. Step 6: Final answer
    x = 120,763,545.60

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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.