Home / 128,521,061.76-177,359,275.44-69,783,840.48

Finding the Fourth Proportional to 128,521,061.76, 177,359,275.44 and 69,783,840.48

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Solution

The fourth proportional to 128,521,061.76, 177,359,275.44 and 69,783,840.48 is: 96,301,814.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,521,061.76 : 177,359,275.44 = 69,783,840.48 : x
  2. Step 2: Convert to fraction form
    128,521,061.76/177,359,275.44 = 69,783,840.48/x
  3. Step 3: Cross multiply
    128,521,061.76x = 177,359,275.44 × 69,783,840.48
  4. Step 4: Simplify right side
    128,521,061.76x = 12,376,811,384,953,342
  5. Step 5: Solve for x
    x = 12,376,811,384,953,342/128,521,061.76
  6. Step 6: Final answer
    x = 96,301,814.00

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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.