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Finding the Fourth Proportional to 118,386.40, 177,595.80 and 39,492.40

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Solution

The fourth proportional to 118,386.40, 177,595.80 and 39,492.40 is: 59,244.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,386.40 : 177,595.80 = 39,492.40 : x
  2. Step 2: Convert to fraction form
    118,386.40/177,595.80 = 39,492.40/x
  3. Step 3: Cross multiply
    118,386.40x = 177,595.80 × 39,492.40
  4. Step 4: Simplify right side
    118,386.40x = 7,013,684,371.92
  5. Step 5: Solve for x
    x = 7,013,684,371.92/118,386.40
  6. Step 6: Final answer
    x = 59,244.00

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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.