Home / 128,980,159.54-177,991,381.26-70,243,805.54

Finding the Fourth Proportional to 128,980,159.54, 177,991,381.26 and 70,243,805.54

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Solution

The fourth proportional to 128,980,159.54, 177,991,381.26 and 70,243,805.54 is: 96,935,776.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,980,159.54 : 177,991,381.26 = 70,243,805.54 : x
  2. Step 2: Convert to fraction form
    128,980,159.54/177,991,381.26 = 70,243,805.54/x
  3. Step 3: Cross multiply
    128,980,159.54x = 177,991,381.26 × 70,243,805.54
  4. Step 4: Simplify right side
    128,980,159.54x = 12,502,791,973,468,418
  5. Step 5: Solve for x
    x = 12,502,791,973,468,418/128,980,159.54
  6. Step 6: Final answer
    x = 96,935,776.93

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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.