Home / 145,155,212.10-217,751,480.55-72,409,176.90

Finding the Fourth Proportional to 145,155,212.10, 217,751,480.55 and 72,409,176.90

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Solution

The fourth proportional to 145,155,212.10, 217,751,480.55 and 72,409,176.90 is: 108,623,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155,212.10 : 217,751,480.55 = 72,409,176.90 : x
  2. Step 2: Convert to fraction form
    145,155,212.10/217,751,480.55 = 72,409,176.90/x
  3. Step 3: Cross multiply
    145,155,212.10x = 217,751,480.55 × 72,409,176.90
  4. Step 4: Simplify right side
    145,155,212.10x = 15,767,205,475,381,862
  5. Step 5: Solve for x
    x = 15,767,205,475,381,862/145,155,212.10
  6. Step 6: Final answer
    x = 108,623,074.90

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1.5x scale

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.