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Finding the Fourth Proportional to 108,030.17, 148,971.02 and 71,718.84

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Solution

The fourth proportional to 108,030.17, 148,971.02 and 71,718.84 is: 98,898.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,030.17 : 148,971.02 = 71,718.84 : x
  2. Step 2: Convert to fraction form
    108,030.17/148,971.02 = 71,718.84/x
  3. Step 3: Cross multiply
    108,030.17x = 148,971.02 × 71,718.84
  4. Step 4: Simplify right side
    108,030.17x = 10,684,028,389.42
  5. Step 5: Solve for x
    x = 10,684,028,389.42/108,030.17
  6. Step 6: Final answer
    x = 98,898.57

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1.5x scale

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.