Home / 153,746.39-212,171.18-85,767.81

Finding the Fourth Proportional to 153,746.39, 212,171.18 and 85,767.81

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Solution

The fourth proportional to 153,746.39, 212,171.18 and 85,767.81 is: 118,360.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,746.39 : 212,171.18 = 85,767.81 : x
  2. Step 2: Convert to fraction form
    153,746.39/212,171.18 = 85,767.81/x
  3. Step 3: Cross multiply
    153,746.39x = 212,171.18 × 85,767.81
  4. Step 4: Simplify right side
    153,746.39x = 18,197,457,024.88
  5. Step 5: Solve for x
    x = 18,197,457,024.88/153,746.39
  6. Step 6: Final answer
    x = 118,360.23

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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.