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Finding the Fourth Proportional to 126,430.66, 174,459.45 and 69,838.66

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Solution

The fourth proportional to 126,430.66, 174,459.45 and 69,838.66 is: 96,369.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,430.66 : 174,459.45 = 69,838.66 : x
  2. Step 2: Convert to fraction form
    126,430.66/174,459.45 = 69,838.66/x
  3. Step 3: Cross multiply
    126,430.66x = 174,459.45 × 69,838.66
  4. Step 4: Simplify right side
    126,430.66x = 12,184,014,212.34
  5. Step 5: Solve for x
    x = 12,184,014,212.34/126,430.66
  6. Step 6: Final answer
    x = 96,369.14

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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.