Home / 128,880,876.93-177,406,412.81-112,332,246.45

Finding the Fourth Proportional to 128,880,876.93, 177,406,412.81 and 112,332,246.45

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Solution

The fourth proportional to 128,880,876.93, 177,406,412.81 and 112,332,246.45 is: 154,626,980.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,880,876.93 : 177,406,412.81 = 112,332,246.45 : x
  2. Step 2: Convert to fraction form
    128,880,876.93/177,406,412.81 = 112,332,246.45/x
  3. Step 3: Cross multiply
    128,880,876.93x = 177,406,412.81 × 112,332,246.45
  4. Step 4: Simplify right side
    128,880,876.93x = 19,928,460,885,021,696
  5. Step 5: Solve for x
    x = 19,928,460,885,021,696/128,880,876.93
  6. Step 6: Final answer
    x = 154,626,980.82

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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.