Home / 115,087,373.40-172,631,060.10-72,089,203.80

Finding the Fourth Proportional to 115,087,373.40, 172,631,060.10 and 72,089,203.80

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Solution

The fourth proportional to 115,087,373.40, 172,631,060.10 and 72,089,203.80 is: 108,133,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,087,373.40 : 172,631,060.10 = 72,089,203.80 : x
  2. Step 2: Convert to fraction form
    115,087,373.40/172,631,060.10 = 72,089,203.80/x
  3. Step 3: Cross multiply
    115,087,373.40x = 172,631,060.10 × 72,089,203.80
  4. Step 4: Simplify right side
    115,087,373.40x = 12,444,835,673,758,948
  5. Step 5: Solve for x
    x = 12,444,835,673,758,948/115,087,373.40
  6. Step 6: Final answer
    x = 108,133,805.70

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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.