Home / 128,111,688.58-176,806,776.09-73,115,773.06

Finding the Fourth Proportional to 128,111,688.58, 176,806,776.09 and 73,115,773.06

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Solution

The fourth proportional to 128,111,688.58, 176,806,776.09 and 73,115,773.06 is: 100,906,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,111,688.58 : 176,806,776.09 = 73,115,773.06 : x
  2. Step 2: Convert to fraction form
    128,111,688.58/176,806,776.09 = 73,115,773.06/x
  3. Step 3: Cross multiply
    128,111,688.58x = 176,806,776.09 × 73,115,773.06
  4. Step 4: Simplify right side
    128,111,688.58x = 12,927,364,116,066,674
  5. Step 5: Solve for x
    x = 12,927,364,116,066,674/128,111,688.58
  6. Step 6: Final answer
    x = 100,906,984.05

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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.