Home / 128,158,817.18-176,860,016.87-69,421,482.27

Finding the Fourth Proportional to 128,158,817.18, 176,860,016.87 and 69,421,482.27

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Solution

The fourth proportional to 128,158,817.18, 176,860,016.87 and 69,421,482.27 is: 95,802,105.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,158,817.18 : 176,860,016.87 = 69,421,482.27 : x
  2. Step 2: Convert to fraction form
    128,158,817.18/176,860,016.87 = 69,421,482.27/x
  3. Step 3: Cross multiply
    128,158,817.18x = 176,860,016.87 × 69,421,482.27
  4. Step 4: Simplify right side
    128,158,817.18x = 12,277,884,525,065,498
  5. Step 5: Solve for x
    x = 12,277,884,525,065,498/128,158,817.18
  6. Step 6: Final answer
    x = 95,802,105.51

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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.