Home / 103,688.02-155,343.14-72,031.14

Finding the Fourth Proportional to 103,688.02, 155,343.14 and 72,031.14

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Solution

The fourth proportional to 103,688.02, 155,343.14 and 72,031.14 is: 107,915.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,688.02 : 155,343.14 = 72,031.14 : x
  2. Step 2: Convert to fraction form
    103,688.02/155,343.14 = 72,031.14/x
  3. Step 3: Cross multiply
    103,688.02x = 155,343.14 × 72,031.14
  4. Step 4: Simplify right side
    103,688.02x = 11,189,543,465.38
  5. Step 5: Solve for x
    x = 11,189,543,465.38/103,688.02
  6. Step 6: Final answer
    x = 107,915.49

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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.