Home / 138,445,485-191,033,543.01-79,696,798.98

Finding the Fourth Proportional to 138,445,485, 191,033,543.01 and 79,696,798.98

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Solution

The fourth proportional to 138,445,485, 191,033,543.01 and 79,696,798.98 is: 109,969,363.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,445,485 : 191,033,543.01 = 79,696,798.98 : x
  2. Step 2: Convert to fraction form
    138,445,485/191,033,543.01 = 79,696,798.98/x
  3. Step 3: Cross multiply
    138,445,485x = 191,033,543.01 × 79,696,798.98
  4. Step 4: Simplify right side
    138,445,485x = 15,224,761,875,705,154
  5. Step 5: Solve for x
    x = 15,224,761,875,705,154/138,445,485
  6. Step 6: Final answer
    x = 109,969,363.58

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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.