Home / 190,678,979.78-286,021,126.97-54,364,363.28

Finding the Fourth Proportional to 190,678,979.78, 286,021,126.97 and 54,364,363.28

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Solution

The fourth proportional to 190,678,979.78, 286,021,126.97 and 54,364,363.28 is: 81,547,302.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,678,979.78 : 286,021,126.97 = 54,364,363.28 : x
  2. Step 2: Convert to fraction form
    190,678,979.78/286,021,126.97 = 54,364,363.28/x
  3. Step 3: Cross multiply
    190,678,979.78x = 286,021,126.97 × 54,364,363.28
  4. Step 4: Simplify right side
    190,678,979.78x = 15,549,356,450,650,156
  5. Step 5: Solve for x
    x = 15,549,356,450,650,156/190,678,979.78
  6. Step 6: Final answer
    x = 81,547,302.53

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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.