Home / 145,440,479.20-218,160,718.80-91,020,920.80

Finding the Fourth Proportional to 145,440,479.20, 218,160,718.80 and 91,020,920.80

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Solution

The fourth proportional to 145,440,479.20, 218,160,718.80 and 91,020,920.80 is: 136,531,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,440,479.20 : 218,160,718.80 = 91,020,920.80 : x
  2. Step 2: Convert to fraction form
    145,440,479.20/218,160,718.80 = 91,020,920.80/x
  3. Step 3: Cross multiply
    145,440,479.20x = 218,160,718.80 × 91,020,920.80
  4. Step 4: Simplify right side
    145,440,479.20x = 19,857,189,507,565,872
  5. Step 5: Solve for x
    x = 19,857,189,507,565,872/145,440,479.20
  6. Step 6: Final answer
    x = 136,531,381.20

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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.