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Finding the Fourth Proportional to 166,113, 249,167.16 and 77,316.84

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Solution

The fourth proportional to 166,113, 249,167.16 and 77,316.84 is: 115,974.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,113 : 249,167.16 = 77,316.84 : x
  2. Step 2: Convert to fraction form
    166,113/249,167.16 = 77,316.84/x
  3. Step 3: Cross multiply
    166,113x = 249,167.16 × 77,316.84
  4. Step 4: Simplify right side
    166,113x = 19,264,817,442.97
  5. Step 5: Solve for x
    x = 19,264,817,442.97/166,113
  6. Step 6: Final answer
    x = 115,974.17

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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.