Home / 128,009,439.12-176,653,026.18-69,272,104.22

Finding the Fourth Proportional to 128,009,439.12, 176,653,026.18 and 69,272,104.22

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Solution

The fourth proportional to 128,009,439.12, 176,653,026.18 and 69,272,104.22 is: 95,595,503.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,009,439.12 : 176,653,026.18 = 69,272,104.22 : x
  2. Step 2: Convert to fraction form
    128,009,439.12/176,653,026.18 = 69,272,104.22/x
  3. Step 3: Cross multiply
    128,009,439.12x = 176,653,026.18 × 69,272,104.22
  4. Step 4: Simplify right side
    128,009,439.12x = 12,237,126,840,418,082
  5. Step 5: Solve for x
    x = 12,237,126,840,418,082/128,009,439.12
  6. Step 6: Final answer
    x = 95,595,503.93

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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.