Home / 156,831.59-216,422.79-85,210.08

Finding the Fourth Proportional to 156,831.59, 216,422.79 and 85,210.08

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Solution

The fourth proportional to 156,831.59, 216,422.79 and 85,210.08 is: 117,587.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,831.59 : 216,422.79 = 85,210.08 : x
  2. Step 2: Convert to fraction form
    156,831.59/216,422.79 = 85,210.08/x
  3. Step 3: Cross multiply
    156,831.59x = 216,422.79 × 85,210.08
  4. Step 4: Simplify right side
    156,831.59x = 18,441,402,118.60
  5. Step 5: Solve for x
    x = 18,441,402,118.60/156,831.59
  6. Step 6: Final answer
    x = 117,587.29

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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.