Home / 145,017,451.20-200,126,636.01-78,939,848.73

Finding the Fourth Proportional to 145,017,451.20, 200,126,636.01 and 78,939,848.73

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Solution

The fourth proportional to 145,017,451.20, 200,126,636.01 and 78,939,848.73 is: 108,938,381.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,017,451.20 : 200,126,636.01 = 78,939,848.73 : x
  2. Step 2: Convert to fraction form
    145,017,451.20/200,126,636.01 = 78,939,848.73/x
  3. Step 3: Cross multiply
    145,017,451.20x = 200,126,636.01 × 78,939,848.73
  4. Step 4: Simplify right side
    145,017,451.20x = 15,797,966,373,473,170
  5. Step 5: Solve for x
    x = 15,797,966,373,473,170/145,017,451.20
  6. Step 6: Final answer
    x = 108,938,381.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.