Home / 117,128.61-161,637.28-63,413.63

Finding the Fourth Proportional to 117,128.61, 161,637.28 and 63,413.63

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Solution

The fourth proportional to 117,128.61, 161,637.28 and 63,413.63 is: 87,510.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.61 : 161,637.28 = 63,413.63 : x
  2. Step 2: Convert to fraction form
    117,128.61/161,637.28 = 63,413.63/x
  3. Step 3: Cross multiply
    117,128.61x = 161,637.28 × 63,413.63
  4. Step 4: Simplify right side
    117,128.61x = 10,250,005,701.41
  5. Step 5: Solve for x
    x = 10,250,005,701.41/117,128.61
  6. Step 6: Final answer
    x = 87,510.69

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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.