Home / 243,138,979.40-364,708,469.10-72,937,891.40

Finding the Fourth Proportional to 243,138,979.40, 364,708,469.10 and 72,937,891.40

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Solution

The fourth proportional to 243,138,979.40, 364,708,469.10 and 72,937,891.40 is: 109,406,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,138,979.40 : 364,708,469.10 = 72,937,891.40 : x
  2. Step 2: Convert to fraction form
    243,138,979.40/364,708,469.10 = 72,937,891.40/x
  3. Step 3: Cross multiply
    243,138,979.40x = 364,708,469.10 × 72,937,891.40
  4. Step 4: Simplify right side
    243,138,979.40x = 26,601,066,711,876,060
  5. Step 5: Solve for x
    x = 26,601,066,711,876,060/243,138,979.40
  6. Step 6: Final answer
    x = 109,406,837.10

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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.