Home / 145,585,118.40-218,222,308.80-72,658,291.20

Finding the Fourth Proportional to 145,585,118.40, 218,222,308.80 and 72,658,291.20

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Solution

The fourth proportional to 145,585,118.40, 218,222,308.80 and 72,658,291.20 is: 108,909,895.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,585,118.40 : 218,222,308.80 = 72,658,291.20 : x
  2. Step 2: Convert to fraction form
    145,585,118.40/218,222,308.80 = 72,658,291.20/x
  3. Step 3: Cross multiply
    145,585,118.40x = 218,222,308.80 × 72,658,291.20
  4. Step 4: Simplify right side
    145,585,118.40x = 15,855,660,059,126,724
  5. Step 5: Solve for x
    x = 15,855,660,059,126,724/145,585,118.40
  6. Step 6: Final answer
    x = 108,909,895.69

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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.