Home / 145,128.65-217,200.90-127,413.95

Finding the Fourth Proportional to 145,128.65, 217,200.90 and 127,413.95

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Solution

The fourth proportional to 145,128.65, 217,200.90 and 127,413.95 is: 190,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,128.65 : 217,200.90 = 127,413.95 : x
  2. Step 2: Convert to fraction form
    145,128.65/217,200.90 = 127,413.95/x
  3. Step 3: Cross multiply
    145,128.65x = 217,200.90 × 127,413.95
  4. Step 4: Simplify right side
    145,128.65x = 27,674,424,612.56
  5. Step 5: Solve for x
    x = 27,674,424,612.56/145,128.65
  6. Step 6: Final answer
    x = 190,688.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.