Home / 129,271.93-178,420.81-83,886.19

Finding the Fourth Proportional to 129,271.93, 178,420.81 and 83,886.19

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Solution

The fourth proportional to 129,271.93, 178,420.81 and 83,886.19 is: 115,779.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,271.93 : 178,420.81 = 83,886.19 : x
  2. Step 2: Convert to fraction form
    129,271.93/178,420.81 = 83,886.19/x
  3. Step 3: Cross multiply
    129,271.93x = 178,420.81 × 83,886.19
  4. Step 4: Simplify right side
    129,271.93x = 14,967,041,967.61
  5. Step 5: Solve for x
    x = 14,967,041,967.61/129,271.93
  6. Step 6: Final answer
    x = 115,779.52

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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.