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Finding the Fourth Proportional to 172,369,839.60, 258,554,759.40 and 70,207,196.40

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Solution

The fourth proportional to 172,369,839.60, 258,554,759.40 and 70,207,196.40 is: 105,310,794.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,369,839.60 : 258,554,759.40 = 70,207,196.40 : x
  2. Step 2: Convert to fraction form
    172,369,839.60/258,554,759.40 = 70,207,196.40/x
  3. Step 3: Cross multiply
    172,369,839.60x = 258,554,759.40 × 70,207,196.40
  4. Step 4: Simplify right side
    172,369,839.60x = 18,152,404,773,350,548
  5. Step 5: Solve for x
    x = 18,152,404,773,350,548/172,369,839.60
  6. Step 6: Final answer
    x = 105,310,794.60

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1.5x scale

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.