Home / 91,966.20-137,916.90-42,070.20

Finding the Fourth Proportional to 91,966.20, 137,916.90 and 42,070.20

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Solution

The fourth proportional to 91,966.20, 137,916.90 and 42,070.20 is: 63,090.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,966.20 : 137,916.90 = 42,070.20 : x
  2. Step 2: Convert to fraction form
    91,966.20/137,916.90 = 42,070.20/x
  3. Step 3: Cross multiply
    91,966.20x = 137,916.90 × 42,070.20
  4. Step 4: Simplify right side
    91,966.20x = 5,802,191,566.38
  5. Step 5: Solve for x
    x = 5,802,191,566.38/91,966.20
  6. Step 6: Final answer
    x = 63,090.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.