Home / 191,105.10-286,657.65-72,831.18

Finding the Fourth Proportional to 191,105.10, 286,657.65 and 72,831.18

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Solution

The fourth proportional to 191,105.10, 286,657.65 and 72,831.18 is: 109,246.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,105.10 : 286,657.65 = 72,831.18 : x
  2. Step 2: Convert to fraction form
    191,105.10/286,657.65 = 72,831.18/x
  3. Step 3: Cross multiply
    191,105.10x = 286,657.65 × 72,831.18
  4. Step 4: Simplify right side
    191,105.10x = 20,877,614,905.53
  5. Step 5: Solve for x
    x = 20,877,614,905.53/191,105.10
  6. Step 6: Final answer
    x = 109,246.77

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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.