Home / 145,308,969.30-217,716,803.55-87,680,147.70

Finding the Fourth Proportional to 145,308,969.30, 217,716,803.55 and 87,680,147.70

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Solution

The fourth proportional to 145,308,969.30, 217,716,803.55 and 87,680,147.70 is: 131,371,391.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,308,969.30 : 217,716,803.55 = 87,680,147.70 : x
  2. Step 2: Convert to fraction form
    145,308,969.30/217,716,803.55 = 87,680,147.70/x
  3. Step 3: Cross multiply
    145,308,969.30x = 217,716,803.55 × 87,680,147.70
  4. Step 4: Simplify right side
    145,308,969.30x = 19,089,441,492,035,888
  5. Step 5: Solve for x
    x = 19,089,441,492,035,888/145,308,969.30
  6. Step 6: Final answer
    x = 131,371,391.48

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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.