Home / 145,152,001.80-217,728,002.70-81,318,299.40

Finding the Fourth Proportional to 145,152,001.80, 217,728,002.70 and 81,318,299.40

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Solution

The fourth proportional to 145,152,001.80, 217,728,002.70 and 81,318,299.40 is: 121,977,449.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,152,001.80 : 217,728,002.70 = 81,318,299.40 : x
  2. Step 2: Convert to fraction form
    145,152,001.80/217,728,002.70 = 81,318,299.40/x
  3. Step 3: Cross multiply
    145,152,001.80x = 217,728,002.70 × 81,318,299.40
  4. Step 4: Simplify right side
    145,152,001.80x = 17,705,270,911,322,608
  5. Step 5: Solve for x
    x = 17,705,270,911,322,608/145,152,001.80
  6. Step 6: Final answer
    x = 121,977,449.10

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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.