Home / 103,521.40-155,282.10-70,060.30

Finding the Fourth Proportional to 103,521.40, 155,282.10 and 70,060.30

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Solution

The fourth proportional to 103,521.40, 155,282.10 and 70,060.30 is: 105,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,521.40 : 155,282.10 = 70,060.30 : x
  2. Step 2: Convert to fraction form
    103,521.40/155,282.10 = 70,060.30/x
  3. Step 3: Cross multiply
    103,521.40x = 155,282.10 × 70,060.30
  4. Step 4: Simplify right side
    103,521.40x = 10,879,110,510.63
  5. Step 5: Solve for x
    x = 10,879,110,510.63/103,521.40
  6. Step 6: Final answer
    x = 105,090.45

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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.