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Finding the Fourth Proportional to 102,885.61, 141,934.19 and 66,598.76

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Solution

The fourth proportional to 102,885.61, 141,934.19 and 66,598.76 is: 91,875.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,885.61 : 141,934.19 = 66,598.76 : x
  2. Step 2: Convert to fraction form
    102,885.61/141,934.19 = 66,598.76/x
  3. Step 3: Cross multiply
    102,885.61x = 141,934.19 × 66,598.76
  4. Step 4: Simplify right side
    102,885.61x = 9,452,641,055.60
  5. Step 5: Solve for x
    x = 9,452,641,055.60/102,885.61
  6. Step 6: Final answer
    x = 91,875.25

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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.