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Finding the Fourth Proportional to 124,683.63, 172,064.51 and 70,972.10

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Solution

The fourth proportional to 124,683.63, 172,064.51 and 70,972.10 is: 97,942.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,683.63 : 172,064.51 = 70,972.10 : x
  2. Step 2: Convert to fraction form
    124,683.63/172,064.51 = 70,972.10/x
  3. Step 3: Cross multiply
    124,683.63x = 172,064.51 × 70,972.10
  4. Step 4: Simplify right side
    124,683.63x = 12,211,779,685.47
  5. Step 5: Solve for x
    x = 12,211,779,685.47/124,683.63
  6. Step 6: Final answer
    x = 97,942.13

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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.