Home / 129,316.93-178,430.61-75,591.55

Finding the Fourth Proportional to 129,316.93, 178,430.61 and 75,591.55

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Solution

The fourth proportional to 129,316.93, 178,430.61 and 75,591.55 is: 104,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,316.93 : 178,430.61 = 75,591.55 : x
  2. Step 2: Convert to fraction form
    129,316.93/178,430.61 = 75,591.55/x
  3. Step 3: Cross multiply
    129,316.93x = 178,430.61 × 75,591.55
  4. Step 4: Simplify right side
    129,316.93x = 13,487,845,931.27
  5. Step 5: Solve for x
    x = 13,487,845,931.27/129,316.93
  6. Step 6: Final answer
    x = 104,300.70

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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.