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Finding the Fourth Proportional to 152,702.72, 210,931.72 and 127,292.16

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Solution

The fourth proportional to 152,702.72, 210,931.72 and 127,292.16 is: 175,831.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,702.72 : 210,931.72 = 127,292.16 : x
  2. Step 2: Convert to fraction form
    152,702.72/210,931.72 = 127,292.16/x
  3. Step 3: Cross multiply
    152,702.72x = 210,931.72 × 127,292.16
  4. Step 4: Simplify right side
    152,702.72x = 26,849,954,251.32
  5. Step 5: Solve for x
    x = 26,849,954,251.32/152,702.72
  6. Step 6: Final answer
    x = 175,831.54

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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.