Home / 145,155,192.60-217,751,451.30-72,409,157.40

Finding the Fourth Proportional to 145,155,192.60, 217,751,451.30 and 72,409,157.40

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Solution

The fourth proportional to 145,155,192.60, 217,751,451.30 and 72,409,157.40 is: 108,623,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155,192.60 : 217,751,451.30 = 72,409,157.40 : x
  2. Step 2: Convert to fraction form
    145,155,192.60/217,751,451.30 = 72,409,157.40/x
  3. Step 3: Cross multiply
    145,155,192.60x = 217,751,451.30 × 72,409,157.40
  4. Step 4: Simplify right side
    145,155,192.60x = 15,767,199,111,260,136
  5. Step 5: Solve for x
    x = 15,767,199,111,260,136/145,155,192.60
  6. Step 6: Final answer
    x = 108,623,045.64

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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.