Home / 138,698,051.51-191,400,965.42-76,817,061.47

Finding the Fourth Proportional to 138,698,051.51, 191,400,965.42 and 76,817,061.47

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Solution

The fourth proportional to 138,698,051.51, 191,400,965.42 and 76,817,061.47 is: 106,006,245.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,698,051.51 : 191,400,965.42 = 76,817,061.47 : x
  2. Step 2: Convert to fraction form
    138,698,051.51/191,400,965.42 = 76,817,061.47/x
  3. Step 3: Cross multiply
    138,698,051.51x = 191,400,965.42 × 76,817,061.47
  4. Step 4: Simplify right side
    138,698,051.51x = 14,702,859,726,179,900
  5. Step 5: Solve for x
    x = 14,702,859,726,179,900/138,698,051.51
  6. Step 6: Final answer
    x = 106,006,245.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.