Home / 145,635,185.80-218,305,812.30-72,739,851.40

Finding the Fourth Proportional to 145,635,185.80, 218,305,812.30 and 72,739,851.40

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Solution

The fourth proportional to 145,635,185.80, 218,305,812.30 and 72,739,851.40 is: 109,036,372.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,635,185.80 : 218,305,812.30 = 72,739,851.40 : x
  2. Step 2: Convert to fraction form
    145,635,185.80/218,305,812.30 = 72,739,851.40/x
  3. Step 3: Cross multiply
    145,635,185.80x = 218,305,812.30 × 72,739,851.40
  4. Step 4: Simplify right side
    145,635,185.80x = 15,879,532,346,458,294
  5. Step 5: Solve for x
    x = 15,879,532,346,458,294/145,635,185.80
  6. Step 6: Final answer
    x = 109,036,372.35

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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.