Home / 145,635,198.80-218,305,831.80-72,739,864.40

Finding the Fourth Proportional to 145,635,198.80, 218,305,831.80 and 72,739,864.40

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Solution

The fourth proportional to 145,635,198.80, 218,305,831.80 and 72,739,864.40 is: 109,036,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,635,198.80 : 218,305,831.80 = 72,739,864.40 : x
  2. Step 2: Convert to fraction form
    145,635,198.80/218,305,831.80 = 72,739,864.40/x
  3. Step 3: Cross multiply
    145,635,198.80x = 218,305,831.80 × 72,739,864.40
  4. Step 4: Simplify right side
    145,635,198.80x = 15,879,536,602,861,210
  5. Step 5: Solve for x
    x = 15,879,536,602,861,210/145,635,198.80
  6. Step 6: Final answer
    x = 109,036,391.85

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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.