Home / 151,612,740.64-209,235,148.96-85,509,120.16

Finding the Fourth Proportional to 151,612,740.64, 209,235,148.96 and 85,509,120.16

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Solution

The fourth proportional to 151,612,740.64, 209,235,148.96 and 85,509,120.16 is: 118,007,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,612,740.64 : 209,235,148.96 = 85,509,120.16 : x
  2. Step 2: Convert to fraction form
    151,612,740.64/209,235,148.96 = 85,509,120.16/x
  3. Step 3: Cross multiply
    151,612,740.64x = 209,235,148.96 × 85,509,120.16
  4. Step 4: Simplify right side
    151,612,740.64x = 17,891,513,494,116,138
  5. Step 5: Solve for x
    x = 17,891,513,494,116,138/151,612,740.64
  6. Step 6: Final answer
    x = 118,007,981.51

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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.