Home / 208,630,070.34-312,878,663.40-68,538,009.51

Finding the Fourth Proportional to 208,630,070.34, 312,878,663.40 and 68,538,009.51

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Solution

The fourth proportional to 208,630,070.34, 312,878,663.40 and 68,538,009.51 is: 102,785,187.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,630,070.34 : 312,878,663.40 = 68,538,009.51 : x
  2. Step 2: Convert to fraction form
    208,630,070.34/312,878,663.40 = 68,538,009.51/x
  3. Step 3: Cross multiply
    208,630,070.34x = 312,878,663.40 × 68,538,009.51
  4. Step 4: Simplify right side
    208,630,070.34x = 21,444,080,807,585,288
  5. Step 5: Solve for x
    x = 21,444,080,807,585,288/208,630,070.34
  6. Step 6: Final answer
    x = 102,785,187.07

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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.