Home / 210,709,988.72-315,921,327.92-106,878,979.13

Finding the Fourth Proportional to 210,709,988.72, 315,921,327.92 and 106,878,979.13

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Solution

The fourth proportional to 210,709,988.72, 315,921,327.92 and 106,878,979.13 is: 160,245,602.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,709,988.72 : 315,921,327.92 = 106,878,979.13 : x
  2. Step 2: Convert to fraction form
    210,709,988.72/315,921,327.92 = 106,878,979.13/x
  3. Step 3: Cross multiply
    210,709,988.72x = 315,921,327.92 × 106,878,979.13
  4. Step 4: Simplify right side
    210,709,988.72x = 33,765,349,012,298,864
  5. Step 5: Solve for x
    x = 33,765,349,012,298,864/210,709,988.72
  6. Step 6: Final answer
    x = 160,245,602.11

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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.