Home / 131,355,473.40-181,240,477.40-78,421,877.61

Finding the Fourth Proportional to 131,355,473.40, 181,240,477.40 and 78,421,877.61

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Solution

The fourth proportional to 131,355,473.40, 181,240,477.40 and 78,421,877.61 is: 108,204,235.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,355,473.40 : 181,240,477.40 = 78,421,877.61 : x
  2. Step 2: Convert to fraction form
    131,355,473.40/181,240,477.40 = 78,421,877.61/x
  3. Step 3: Cross multiply
    131,355,473.40x = 181,240,477.40 × 78,421,877.61
  4. Step 4: Simplify right side
    131,355,473.40x = 14,213,218,536,248,662
  5. Step 5: Solve for x
    x = 14,213,218,536,248,662/131,355,473.40
  6. Step 6: Final answer
    x = 108,204,235.18

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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.