Home / 178,998,080.10-247,014,870.57-100,681,686.78

Finding the Fourth Proportional to 178,998,080.10, 247,014,870.57 and 100,681,686.78

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Solution

The fourth proportional to 178,998,080.10, 247,014,870.57 and 100,681,686.78 is: 138,939,332.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,998,080.10 : 247,014,870.57 = 100,681,686.78 : x
  2. Step 2: Convert to fraction form
    178,998,080.10/247,014,870.57 = 100,681,686.78/x
  3. Step 3: Cross multiply
    178,998,080.10x = 247,014,870.57 × 100,681,686.78
  4. Step 4: Simplify right side
    178,998,080.10x = 24,869,873,828,730,980
  5. Step 5: Solve for x
    x = 24,869,873,828,730,980/178,998,080.10
  6. Step 6: Final answer
    x = 138,939,332.84

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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.