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Finding the Fourth Proportional to 171,648,653.80, 257,472,980.70 and 63,920,986.60

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Solution

The fourth proportional to 171,648,653.80, 257,472,980.70 and 63,920,986.60 is: 95,881,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,648,653.80 : 257,472,980.70 = 63,920,986.60 : x
  2. Step 2: Convert to fraction form
    171,648,653.80/257,472,980.70 = 63,920,986.60/x
  3. Step 3: Cross multiply
    171,648,653.80x = 257,472,980.70 × 63,920,986.60
  4. Step 4: Simplify right side
    171,648,653.80x = 16,457,926,949,186,758
  5. Step 5: Solve for x
    x = 16,457,926,949,186,758/171,648,653.80
  6. Step 6: Final answer
    x = 95,881,479.90

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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.