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Finding the Fourth Proportional to 103,510.40, 155,265.60 and 97,386.80

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Solution

The fourth proportional to 103,510.40, 155,265.60 and 97,386.80 is: 146,080.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,510.40 : 155,265.60 = 97,386.80 : x
  2. Step 2: Convert to fraction form
    103,510.40/155,265.60 = 97,386.80/x
  3. Step 3: Cross multiply
    103,510.40x = 155,265.60 × 97,386.80
  4. Step 4: Simplify right side
    103,510.40x = 15,120,819,934.08
  5. Step 5: Solve for x
    x = 15,120,819,934.08/103,510.40
  6. Step 6: Final answer
    x = 146,080.20

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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.