Home / 92,780,636.16-128,314,729.08-81,158,023.92

Finding the Fourth Proportional to 92,780,636.16, 128,314,729.08 and 81,158,023.92

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Solution

The fourth proportional to 92,780,636.16, 128,314,729.08 and 81,158,023.92 is: 112,240,767.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,780,636.16 : 128,314,729.08 = 81,158,023.92 : x
  2. Step 2: Convert to fraction form
    92,780,636.16/128,314,729.08 = 81,158,023.92/x
  3. Step 3: Cross multiply
    92,780,636.16x = 128,314,729.08 × 81,158,023.92
  4. Step 4: Simplify right side
    92,780,636.16x = 10,413,769,851,962,960
  5. Step 5: Solve for x
    x = 10,413,769,851,962,960/92,780,636.16
  6. Step 6: Final answer
    x = 112,240,767.93

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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.