Home / 128,158,841.22-176,860,050.06-69,421,506.41

Finding the Fourth Proportional to 128,158,841.22, 176,860,050.06 and 69,421,506.41

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Solution

The fourth proportional to 128,158,841.22, 176,860,050.06 and 69,421,506.41 is: 95,802,138.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,158,841.22 : 176,860,050.06 = 69,421,506.41 : x
  2. Step 2: Convert to fraction form
    128,158,841.22/176,860,050.06 = 69,421,506.41/x
  3. Step 3: Cross multiply
    128,158,841.22x = 176,860,050.06 × 69,421,506.41
  4. Step 4: Simplify right side
    128,158,841.22x = 12,277,891,098,028,912
  5. Step 5: Solve for x
    x = 12,277,891,098,028,912/128,158,841.22
  6. Step 6: Final answer
    x = 95,802,138.82

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1.5x scale

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.