Home / 109,302,400.80-150,739,682.40-90,688,070.88

Finding the Fourth Proportional to 109,302,400.80, 150,739,682.40 and 90,688,070.88

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Solution

The fourth proportional to 109,302,400.80, 150,739,682.40 and 90,688,070.88 is: 125,068,533.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,302,400.80 : 150,739,682.40 = 90,688,070.88 : x
  2. Step 2: Convert to fraction form
    109,302,400.80/150,739,682.40 = 90,688,070.88/x
  3. Step 3: Cross multiply
    109,302,400.80x = 150,739,682.40 × 90,688,070.88
  4. Step 4: Simplify right side
    109,302,400.80x = 13,670,291,001,919,888
  5. Step 5: Solve for x
    x = 13,670,291,001,919,888/109,302,400.80
  6. Step 6: Final answer
    x = 125,068,533.74

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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.